Title: Cheap Flights from Washington (DCA) to Mammoth Lakes (MMH) - Expedia.ca ![](https://images.trvl-media.com/place/2363/05667cae-16df-45a4-83c2-ff8a543b6552.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/2363/05667cae-16df-45a4-83c2-ff8a543b6552.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Washington (DCA) to Mammoth Lakes (MMH) - [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 Ronald Reagan National Airport (DCA) to Mammoth Lakes, CA (MMH-Mammoth Yosemite) - ![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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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:dca,to:mmh,departure:01/10/2025TANYT&leg2=from:mmh,to:dca,departure:08/10/2025TANYT&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) Flight from Washington to Mammoth Lakes (DCA - MMH) route information | Origin airport | Ronald Reagan Washington National | | --- | --- | | Destination airport | Mammoth Yosemite | | Distance | 3599 km | ## Washington to Mammoth Lakes Flights **The easy way to book your flights from Washington to Mammoth Lakes**  With Expedia, it’s simple to find and book flights to Mammoth Lakes 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 Mammoth Yosemite, 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 Mammoth Lakes today, tomorrow, or this week.   **Save dollars with cheap flights from Ronald Reagan Washington National, DCA to Mammoth Yosemite, MMH**  Sort your search results by price to find great deals on your flight from Washington to Mammoth Lakes—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Mammoth Lakes 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 Mammoth Lakes   - 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 Mammoth Lakes 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. So book your flight to Mammoth Lakes with Expedia today. ## Frequently asked questions ### How much is a flight from DCA to Mammoth Lakes Airport? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from National Airport to MMH was . Cheap tickets don't wait forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Ronald Reagan Washington National Airport (DCA) to Mammoth Yosemite Airport (MMH)? > Each air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from DCA to Mammoth Yosemite Airport (MMH) that have flexible change policies? > Flights from Ronald Reagan Washington National Airport (DCA) to Mammoth Lakes Airport with flexible change policies are available with many carriers. Simply use our "No change fees" filter while searching. You'll only need to cover the cost difference between the two flights, without any added fees to worry about. ### How far is the flight from National Airport to Mammoth Yosemite Airport (MMH)? > It's around 3,600 kilometres from Ronald Reagan Washington National Airport (DCA) to Mammoth Yosemite Airport (MMH), so you'll be up in the air for a while. Keep yourself entertained by packing things like playing cards (if you're travelling with friends) or a thrilling novel. ### Which airlines fly direct from National Airport to Mammoth Lakes Airport? > At present, no airlines offer flights directly from National Airport to MMH. You'll need to book a flight with one or more stops. To score the best connections and price, lock in your airfare ahead of time. ### Are National Airport to Mammoth Lakes Airport flight tickets cheaper when they're purchased at the last minute? > Fares from National Airport to MMH are available up to a year before departure on Expedia. And although you may pick up great last-minute deal, it's never something you can count on. Also, booking your flights well in advance means you'll have more choices — and you can avoid getting caught in the dreaded middle seat! 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