$195 Cheap Delta flights Billings (BIL) to Washington (IAD)

View $195 flight on Sat, Aug 23, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$195 Cheap Delta flights Billings (BIL) to Washington (IAD)

Prices were available within the past 7 days and start at $195 for one-way flights and $389 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Sep 6 - Sun, Sep 14
BIL
Billings
IAD
Washington
$389 Roundtrip, found 21 hours ago
$389
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, Sep 6 from Billings to Washington, returning Sun, Sep 14, priced at $389 found 21 hours ago
Delta
Thu, Aug 14 - Wed, Aug 20
BIL
Billings
IAD
Washington
$397 Roundtrip, found 4 days ago
$397
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Aug 14 from Billings to Washington, returning Wed, Aug 20, priced at $397 found 4 days ago
Delta
Sat, Oct 11 - Fri, Oct 31
BIL
Billings
IAD
Washington
$398 Roundtrip, found 4 days ago
$398
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Oct 11 from Billings to Washington, returning Fri, Oct 31, priced at $398 found 4 days ago
Delta
Tue, Nov 18 - Sat, Dec 6
BIL
Billings
IAD
Washington
$399 Roundtrip, found 3 days ago
$399
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Nov 18 from Billings to Washington, returning Sat, Dec 6, priced at $399 found 3 days ago
Delta
Wed, Sep 10 - Mon, Sep 15
BIL
Billings
IAD
Washington
$408 Roundtrip, found 1 day ago
$408
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Sep 10 from Billings to Washington, returning Mon, Sep 15, priced at $408 found 1 day ago
Delta
Wed, Sep 10 - Mon, Sep 15
BIL
Billings
IAD
Washington
$411 Roundtrip, found 1 day ago
$411
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Sep 10 from Billings to Washington, returning Mon, Sep 15, priced at $411 found 1 day ago
Delta
Sat, Sep 27 - Sat, Oct 11
BIL
Billings
IAD
Washington
$413 Roundtrip, found 3 days ago
$413
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Billings to Washington, returning Sat, Oct 11, priced at $413 found 3 days ago
Delta
Mon, Sep 29 - Sat, Oct 11
BIL
Billings
IAD
Washington
$418 Roundtrip, found 3 days ago
$418
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Sep 29 from Billings to Washington, returning Sat, Oct 11, priced at $418 found 3 days ago
Flights from Billings (BIL) to Washington (IAD)
Origin airport
Logan Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
1644 mi

Frequently asked questions

How much is a Delta Air Lines flight from Logan Intl. Airport (BIL) to Washington Dulles Intl. Airport (IAD)?
Scoring cheap one-way Delta Air Lines flights from BIL to IAD from $195 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares from $389 for your next getaway.**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 BIL to IAD with Delta Air Lines?
January is one of the least expensive months to fly to Washington with Delta Air Lines. You could also find great deals on one-way and return tickets in February.
What is the cheapest time to book flights from Logan Intl. Airport (BIL) to Washington Dulles Intl. Airport (IAD) with Delta Air Lines?
Look for affordable Delta Air Lines flights from Logan Intl. Airport (BIL) to Washington Dulles Intl. Airport (IAD) one to three months before your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 Logan Intl. Airport (BIL) to Washington Dulles Intl. Airport (IAD)?
Click on our "Nonstop" filter when searching for direct Delta Air Lines flights from BIL to IAD. You'll also be able to compare other carriers servicing the same direct trip.
What is the earliest Delta Air Lines flight from BIL to IAD?
Sort your results by "Early Morning" and "Morning" to browse the earliest flights from BIL to IAD. Jetting off early means flight cancellations are less likely.**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?
Washington Dulles Intl. Airport (IAD) is the primary Washington gateway for Delta Air Lines flights from Logan Intl. Airport (BIL).
Why fly with Delta Air Lines from BIL to IAD?
Traveling from BIL to IAD with Delta Air Lines comes with a host of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's on top of the Delta SkyMiles points you can earn with Delta Air Lines.*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 Logan Intl. Airport (BIL) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of booking, but your airline may charge a fee after that time. For further details about altering your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to adjust your plans without additional costs, apply the "Changes included" or "No cancel fee" filter when organizing your next break.

Explore a world of travel with Expedia

*Available to One Key members.