Title: Cheap Flights from Seattle (SEA) to Harlingen (HRL) - Expedia.ca ![Default HTG hotel image](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Seattle (SEA) to Harlingen (HRL) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Valley Intl. Airport (HRL) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:hrl,departure:02/10/2025TANYT&leg2=from:hrl,to:sea,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:hrl,departure:02/10/2025TANYT&leg2=from:hrl,to:sea,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:hrl,departure:02/10/2025TANYT&leg2=from:hrl,to:sea,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:hrl,departure:02/10/2025TANYT&leg2=from:hrl,to:sea,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Sun Country Airlines](https://a.travel-assets.com/air/airlines/sy_sq.svg) Sun Country Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:hrl,departure:02/10/2025TANYT&leg2=from:hrl,to:sea,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SY"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Find the cheapest month to fly from Seattle (SEA) to Harlingen (HRL) ### January is typically the cheapest month to fly From CA $271 - CA $509 per traveller. ## Frequently asked questions ### How much is a flight from SEA to Valley Intl. Airport (HRL)? > Round-trip journeys between Sea-Tac Airport and Valley Intl. Airport (HRL) start from . This is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to HRL? > When it comes to cancellation fees, each airline has its own set of terms and conditions. If you decide to cancel your trip, head to our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to HRL that have flexible change policies? > Select our "No change fees" filter to find flexible travel options for your flight from Sea-Tac Airport to HRL. This allows you to lock in a good price ahead of time and still have the freedom to make changes without any additional fees. Keep in mind that you'll need to cover the fare difference. ### How many hours is the flight from SEA to HRL? > The flight time from Sea-Tac Airport to Valley Intl. Airport (HRL) is around 6 hours and 11 minutes. Put your headphones on, listen to your favourite playlist and your trip will whiz by. ### How far is the flight from SEA to Valley Intl. Airport (HRL)? > Around 3,200 kilometres separates SeaTac and Harlingen, so pack some entertainment to help you fill in a few hours. That thrilling novel you haven't started will be just the ticket. ### Which airlines fly direct from SEA to HRL? > Flying directly between SEA and HRL isn't possible right now. However, you'll still be able to find a flight to Harlingen with at least one stop. ### Are Sea-Tac Airport to HRL flight tickets cheaper when they're purchased at the last minute? > Flight prices are constantly going up and down, so there are no guarantees. While last-minute deals between Sea-Tac Airport and Valley Intl. Airport (HRL) are possible, it's also a good idea to monitor prices well before you fly. In fact, some carriers advertise their prices up to 12 months before the departure date. Expedia is constantly updating the biggest bargains around, so check back often and be ready to secure your seat when prices drop. ## Travel information | Origin airport | Seattle - Tacoma Intl. | | --- | --- | | Destination airport | Valley Intl. | | Distance | 3175 km | ## Book with confidence ### Seattle to Harlingen Flights **The easy way to book your flights from Seattle to Harlingen**  With Expedia, it’s simple to find and book flights to Harlingen from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Valley Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Harlingen today, tomorrow, or this week.   **Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Valley Intl., HRL**  Sort your search results by price to find great deals on your flight from Seattle to Harlingen—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Harlingen from Seattle currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Harlingen   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Harlingen from Seattle**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Harlingen with Expedia today. ## Explore a world of travel with Expedia - Flights - [Flights from Iron Mountain to Harlingen](https://www.expedia.ca/lp/flights/1596/1515/iron-mountain-to-harlingen) - [Flights from Williston to Harlingen](https://www.expedia.ca/lp/flights/1636/1515/williston-to-harlingen) - [Flights from Hilo to Harlingen](https://www.expedia.ca/lp/flights/1643/1515/hilo-to-harlingen) - [Flights from Detroit to Harlingen](https://www.expedia.ca/lp/flights/178255/1515/detroit-to-harlingen) - [Flights from Minneapolis - St. Paul to Harlingen](https://www.expedia.ca/lp/flights/178287/1515/minneapolis-st-paul-to-harlingen) - [Flights from Ottawa to Harlingen](https://www.expedia.ca/lp/flights/178296/1515/ottawa-to-harlingen) - [Flights from Phoenix to Harlingen](https://www.expedia.ca/lp/flights/178298/1515/phoenix-to-harlingen) - [Flights from Vancouver to Harlingen](https://www.expedia.ca/lp/flights/178315/1515/vancouver-to-harlingen) - [Flights from Acapulco to Harlingen](https://www.expedia.ca/lp/flights/179991/1515/acapulco-to-harlingen) - [Flights from Durango to Harlingen](https://www.expedia.ca/lp/flights/180048/1515/durango-to-harlingen) - [Flights from Lagos to Harlingen](https://www.expedia.ca/lp/flights/2115/1515/lagos-to-harlingen) - [Flights from Middlemount to Harlingen](https://www.expedia.ca/lp/flights/2366/1515/middlemount-to-harlingen) - [Flights from Ogdensburg to Harlingen](https://www.expedia.ca/lp/flights/2648/1515/ogdensburg-to-harlingen) - [Flights from Kamloops to Harlingen](https://www.expedia.ca/lp/flights/3979/1515/kamloops-to-harlingen) - [Flights from Regina to Harlingen](https://www.expedia.ca/lp/flights/4053/1515/regina-to-harlingen) - [Flights from Thunder Bay to Harlingen](https://www.expedia.ca/lp/flights/4054/1515/thunder-bay-to-harlingen) - [Flights from Saskatoon to Harlingen](https://www.expedia.ca/lp/flights/4117/1515/saskatoon-to-harlingen) - [Flights from Yellowknife to Harlingen](https://www.expedia.ca/lp/flights/4146/1515/yellowknife-to-harlingen) - [Flights from Fort St. John to Harlingen](https://www.expedia.ca/lp/flights/57378/1515/fort-st-john-to-harlingen) - [Flights from Isola di Capo Rizzuto to Harlingen](https://www.expedia.ca/lp/flights/6023415/1515/isola-di-capo-rizzuto-to-harlingen) - [Flights from Niagara Falls to Harlingen](https://www.expedia.ca/lp/flights/602721/1515/niagara-falls-to-harlingen) - [Flights from Spokane to Harlingen](https://www.expedia.ca/lp/flights/602959/1515/spokane-to-harlingen) - [Flights from Melilla to Harlingen](https://www.expedia.ca/lp/flights/6047903/1515/melilla-to-harlingen) - [Flights from Basel to Harlingen](https://www.expedia.ca/lp/flights/6050770/1515/basel-to-harlingen) - [Flights from St. Peter to Harlingen](https://www.expedia.ca/lp/flights/6053832/1515/st-peter-to-harlingen) - [Flights from San Bernardino to Harlingen](https://www.expedia.ca/lp/flights/6055931/1515/san-bernardino-to-harlingen) - [Flights from Cranbrook to Harlingen](https://www.expedia.ca/lp/flights/6058315/1515/cranbrook-to-harlingen) - [Flights from Grande Prairie to Harlingen](https://www.expedia.ca/lp/flights/6139550/1515/grande-prairie-to-harlingen) - [Flights from Winnipeg to Brownsville](https://www.expedia.ca/lp/flights/6141041/6058982/winnipeg-to-brownsville) - [Flights from Corpus Christi to Harlingen](https://www.expedia.ca/lp/flights/915/1515/corpus-christi-to-harlingen) - [Flights from Alexandria (AEX) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/aex/bro/alexandria-to-brownsville) - [Flights from Austin (AUS) to McAllen (MFE)](https://www.expedia.ca/lp/flights/aus/mfe/austin-to-mcallen) - [Flights from Bridgetown (BGI) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/bgi/bro/bridgetown-to-brownsville) - [Flights from Bangor (BGR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/bgr/mfe/bangor-to-mcallen) - [Flights from Billings (BIL) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/bil/bro/billings-to-brownsville) - [Flights from Bellingham (BLI) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/bli/bro/bellingham-to-brownsville) - [Flights from Boston (BOS) to McAllen (MFE)](https://www.expedia.ca/lp/flights/bos/mfe/boston-to-mcallen) - [Flights from Burlington (BTV) to McAllen (MFE)](https://www.expedia.ca/lp/flights/btv/mfe/burlington-to-mcallen) - [Flights from Buffalo (BUF) to McAllen (MFE)](https://www.expedia.ca/lp/flights/buf/mfe/buffalo-to-mcallen) - [Flights from Cancun (CUN) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/cun/bro/cancun-to-brownsville) - [Flights from Clovis (CVN) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/cvn/bro/clovis-to-brownsville) - [Flights from Mosinee (CWA) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/cwa/bro/mosinee-to-brownsville) - [Flights from Cozumel (CZM) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/czm/bro/cozumel-to-brownsville) - [Flights from Daytona Beach (DAB) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/dab/bro/daytona-beach-to-brownsville) - [Flights from Dallas (DFW) to McAllen (MFE)](https://www.expedia.ca/lp/flights/dfw/mfe/dallas-to-mcallen) - [Flights from Duluth (DLH) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/dlh/bro/duluth-to-brownsville) - [Flights from Detroit (DTW) to McAllen (MFE)](https://www.expedia.ca/lp/flights/dtw/mfe/detroit-to-mcallen) - [Flights from Fargo (FAR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/far/mfe/fargo-to-mcallen) - [Flights from Fort Lauderdale (FLL) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/fll/bro/fort-lauderdale-to-brownsville) - [Flights from Fort Lauderdale (FLL) to McAllen (MFE)](https://www.expedia.ca/lp/flights/fll/mfe/fort-lauderdale-to-mcallen) - [Flights from Spokane (GEG) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/geg/bro/spokane-to-brownsville) - [Flights from Grand Forks (GFK) to McAllen (MFE)](https://www.expedia.ca/lp/flights/gfk/mfe/grand-forks-to-mcallen) - [Flights from Great Falls (GTF) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/gtf/bro/great-falls-to-brownsville) - [Flights from Great Falls (GTF) to McAllen (MFE)](https://www.expedia.ca/lp/flights/gtf/mfe/great-falls-to-mcallen) - [Flights from Holland (HLM) to McAllen (MFE)](https://www.expedia.ca/lp/flights/hlm/mfe/holland-to-mcallen) - [Flights from Huatulco (HUX) to McAllen (MFE)](https://www.expedia.ca/lp/flights/hux/mfe/huatulco-to-mcallen) - [Flights from Houston (IAH) to McAllen (MFE)](https://www.expedia.ca/lp/flights/iah/mfe/houston-to-mcallen) - [Flights from New York (JFK) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/jfk/bro/new-york-to-brownsville) - [Flights from Las Vegas (LAS) to McAllen (MFE)](https://www.expedia.ca/lp/flights/las/mfe/las-vegas-to-mcallen) - [Flights from London (LHR) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/lhr/bro/london-to-brownsville) - [Flights from Merida (MID) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/mid/bro/merida-to-brownsville) - [Flights from Minot (MOT) to McAllen (MFE)](https://www.expedia.ca/lp/flights/mot/mfe/minot-to-mcallen) - [Flights from Marseille (MRS) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/mrs/bro/marseille-to-brownsville) - [Flights from Minneapolis (MSP) to McAllen (MFE)](https://www.expedia.ca/lp/flights/msp/mfe/minneapolis-to-mcallen) - [Flights from Chicago (ORD) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/ord/bro/chicago-to-brownsville) - [Flights from Plattsburgh (PBG) to McAllen (MFE)](https://www.expedia.ca/lp/flights/pbg/mfe/plattsburgh-to-mcallen) - [Flights from Phoenix (PHX) to McAllen (MFE)](https://www.expedia.ca/lp/flights/phx/mfe/phoenix-to-mcallen) - [Flights from Pittsburgh (PIT) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/pit/bro/pittsburgh-to-brownsville) - [Flights from Puerto Vallarta (PVR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/pvr/mfe/puerto-vallarta-to-mcallen) - [Flights from San Antonio (SAT) to McAllen (MFE)](https://www.expedia.ca/lp/flights/sat/mfe/san-antonio-to-mcallen) - [Flights from Seattle (SEA) to McAllen (MFE)](https://www.expedia.ca/lp/flights/sea/mfe/seattle-to-mcallen) - [Flights from San Francisco (SFO) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/sfo/bro/san-francisco-to-brownsville) - [Flights from Syracuse (SYR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/syr/mfe/syracuse-to-mcallen) - [Flights from Tuscaloosa (TCL) to McAllen (MFE)](https://www.expedia.ca/lp/flights/tcl/mfe/tuscaloosa-to-mcallen) - [Flights from Victoria (VCT) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/vct/bro/victoria-to-brownsville) - [Flights from Edmonton (YED) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/yed/bro/edmonton-to-brownsville) - [Flights from Edmonton (YEG) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yeg/mfe/edmonton-to-mcallen) - [Flights from Hamilton (YHM) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yhm/mfe/hamilton-to-mcallen) - [Flights from Halifax (YHZ) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yhz/mfe/halifax-to-mcallen) - [Flights from Kelowna (YLW) to McAllen (MFE)](https://www.expedia.ca/lp/flights/ylw/mfe/kelowna-to-mcallen) - [Flights from Ottawa (YOW) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yow/mfe/ottawa-to-mcallen) - [Flights from Québec (YQB) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/yqb/bro/quebec-to-brownsville) - [Flights from Québec (YQB) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yqb/mfe/quebec-to-mcallen) - [Flights from Windsor (YQG) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yqg/mfe/windsor-to-mcallen) - [Flights from Moncton (YQM) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yqm/mfe/moncton-to-mcallen) - [Flights from Regina (YQR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yqr/mfe/regina-to-mcallen) - [Flights from Thunder Bay (YQT) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yqt/mfe/thunder-bay-to-mcallen) - [Flights from Toronto (YTO) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yto/mfe/toronto-to-mcallen) - [Flights from Timmins (YTS) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/yts/bro/timmins-to-brownsville) - [Flights from Toronto (YTZ) to McAllen (MFE)](https://www.expedia.ca/lp/flights/ytz/mfe/toronto-to-mcallen) - [Flights from Montreal (YUL) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yul/mfe/montreal-to-mcallen) - [Flights from Vancouver (YVR) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yvr/mfe/vancouver-to-mcallen) - [Flights from Winnipeg (YWG) to McAllen (MFE)](https://www.expedia.ca/lp/flights/ywg/mfe/winnipeg-to-mcallen) - [Flights from Saskatoon (YXE) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yxe/mfe/saskatoon-to-mcallen) - [Flights from London (YXU) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yxu/mfe/london-to-mcallen) - [Flights from Calgary (YYC) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yyc/mfe/calgary-to-mcallen) - [Flights from Charlottetown (YYG) to Brownsville (BRO)](https://www.expedia.ca/lp/flights/yyg/bro/charlottetown-to-brownsville) - [Flights from Victoria (YYJ) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yyj/mfe/victoria-to-mcallen) - [Flights from St. John's (YYT) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yyt/mfe/st-johns-to-mcallen) - [Flights from Toronto (YYZ) to McAllen (MFE)](https://www.expedia.ca/lp/flights/yyz/mfe/toronto-to-mcallen) \*Available to Expedia members.