Title: Cheap Flights from Washington (IAD) to Chiang Rai (CEI) - Expedia.ca ![Lampang, Thailand. Wat Chiang Rai Temple on a sunny day](https://images.trvl-media.com/place/6094729/6abc9fe6-542e-461c-8557-12deda61cded.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6094729/6abc9fe6-542e-461c-8557-12deda61cded.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Washington (IAD) to Chiang Rai (CEI) - [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 Washington Dulles International Airport (IAD) to Chiang Rai Intl. Airport (CEI) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![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:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![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:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![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:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:cei,departure:20/11/2025TANYT&leg2=from:cei,to:iad,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) - ![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) ## Frequently asked questions ### How much is a flight from Dulles Intl. Airport to Mae Fah Luang - Chiang Rai Intl. Airport? > Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between Dulles Intl. Airport and CEI start from . Make your booking ASAP to score the best price for your trip. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from IAD to Chiang Rai Intl. Airport (CEI)? > Each air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to CEI that have flexible change policies? > Flights from IAD to CEI offering flexible change policies are available with many airlines. Simply use our "No change fees" filter while searching. You'll only need to pay the cost difference between flights, without any additional fees to worry about. ### How far is the flight from Dulles Intl. Airport to Mae Fah Luang - Chiang Rai Intl. Airport? > With a flight distance of 13,500 kilometres from Washington Dulles Intl. Airport (IAD) to Chiang Rai Intl. Airport (CEI), this is a long-haul journey. Remember to stay hydrated and go for a short walk down the aisle from time to time. ### Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Chiang Rai Intl. Airport (CEI)? > If you want to fly straight from IAD to Mae Fah Luang - Chiang Rai Intl. Airport, you'll have to book a flight with one or more stops. Unfortunately, there are no airlines that fly directly between these airports. ### Are Washington Dulles Intl. Airport (IAD) to Chiang Rai Intl. Airport (CEI) flight tickets cheaper when they're purchased at the last minute? > Booking last minute from Washington Dulles Intl. Airport (IAD) to Chiang Rai Intl. Airport (CEI) can be hit-or-miss. It is possible to score a bargain, but you could also miss out entirely! If you'd prefer to play it safe and start planning ahead of time, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines publish their prices that far in advance. Our advice? Check back often as prices are updated regularly. ## Travel information | Origin airport | Washington Dulles Intl. | | --- | --- | | Destination airport | Chiang Rai Intl. | | Distance | 13380 km | ## Book with confidence ### Chantilly to Chiang Rai Flights **The easy way to book your flights from Washington to Chiang Rai**  With Expedia, it’s simple to find and book flights to Chiang Rai from Washington 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 Chiang Rai 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 Washington to Chiang Rai today, tomorrow, or this week.   **Save dollars with cheap flights from Washington Dulles Intl., IAD to Chiang Rai Intl., CEI**  Sort your search results by price to find great deals on your flight from Washington to Chiang Rai—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chiang Rai from Washington 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 Chiang Rai   - 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 Chiang Rai from Washington**  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. 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