$138 Cheap Delta flights Miami (MIA) to Washington (IAD)

View $138 flight on Mon, Aug 4, 2025Opens in a new window

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$138 Cheap Delta flights Miami (MIA) to Washington (IAD)

Prices were available within the past 7 days and start at $138 for one-way flights and $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 4 - Tue, Sep 9
MIA
Miami
IAD
Washington
$260 Roundtrip, found 8 hours ago
$260
Roundtrip
found 8 hours ago
Select Delta flight, departing Thu, Sep 4 from Miami to Washington, returning Tue, Sep 9, priced at $260 found 8 hours ago
Flights from Miami (MIA) to Washington (IAD)
Origin airport
Miami Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Popular airline
Frontier Airlines
Distance
923 mi
Average flight time
2 hours 39 mins

Frequently asked questions

How much is a Delta Air Lines flight from Miami Intl. Airport (MIA) to Washington Dulles Intl. Airport (IAD)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap Delta Air Lines return flights from $260 from MIA to IAD. Affordable one-way tickets from $138 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from MIA to IAD with Delta Air Lines?
Look for one-way or round-trip flights to Washington in January or February. You could find a cheap fare with Delta Air Lines during these off-peak times.
What is the cheapest time to book flights from Miami Intl. Airport (MIA) to Washington Dulles Intl. Airport (IAD) with Delta Air Lines?
Start searching one to three months before your departure to score cheaper fares on Delta Air Lines flights from Miami Intl. Airport (MIA) to Washington Dulles Intl. Airport (IAD). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Miami Intl. Airport (MIA) to Washington Dulles Intl. Airport (IAD)?
Use the "Nonstop" filter when searching for direct Delta Air Lines flights from MIA to IAD. It's also a good way to compare other airlines offering the same nonstop route.
What is the earliest Delta Air Lines flight from MIA to IAD?
Browse Delta Air Lines's earliest flights from MIA to IAD by using our "Morning" and "Early Morning" filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Washington?
Delta Air Lines flights from Miami Intl. Airport (MIA) to Washington land at Washington Dulles Intl. Airport (IAD). This is the main entry point here.
Why fly with Delta Air Lines from MIA to IAD?
Delta Air Lines makes flying from MIA to IAD more comfortable with an excellent in-flight experience and a rewarding loyalty program. You even have the chance to collect points with Delta SkyMiles. Don't forget to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Miami Intl. Airport (MIA) to Washington Dulles Intl. Airport (IAD)?
Changes are typically free within 24 hours of making a booking, but your airline may charge you after that. For further details about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to adjust your plans without additional charges, apply the "Changes included" and "No cancel fee" filters when planning your next break.

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