American AirlinesDepart07:18
Tue, Nov 10IAD → BIL
6h 48m · 1 stop
$240one way, per person
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- Cheapest fare
- $240
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 6h 48m
American Airlines · Tue, Nov 10
from $240
Usually 1+ stop
2,680 km
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Cheapest month to fly from Washington to Billings
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Washington to Billings
Washington (WAS) and Billings (BIL) are about 2,680 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 6h 48m. Over the next few months, one-way fares start from $240, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Washington to Billings?
The cheapest one-way fare we've seen recently is $240 with American Airlines, departing Tuesday, November 10, 2026.
What is the cheapest month to fly from Washington to Billings?
November 2026 currently has the lowest fares, from $240 one way.
Are there direct flights from Washington to Billings?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Washington to Billings?
The quickest journey we've seen takes about 6h 48m. Washington and Billings are around 2,680 km apart.
Which airlines fly from Washington to Billings?
Recent fares on this route were with American Airlines.
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