Alaska AirlinesDepart08:00
Tue, Nov 10DCA → HLN
7h 31m · 1 stop
$243one way, per person
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- Cheapest fare
- $243
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 7h 31m
Alaska Airlines · Tue, Nov 10
from $243
Usually 1+ stop
2,950 km
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Cheapest month to fly from Washington to Helena
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 Helena
Washington (WAS) and Helena (HLN) are about 2,950 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 7h 31m. Over the next few months, one-way fares start from $243, 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 Helena?
The cheapest one-way fare we've seen recently is $243 with Alaska Airlines, departing Tuesday, November 10, 2026.
What is the cheapest month to fly from Washington to Helena?
November 2026 currently has the lowest fares, from $243 one way.
Are there direct flights from Washington to Helena?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Washington to Helena?
The quickest journey we've seen takes about 7h 31m. Washington and Helena are around 2,950 km apart.
Which airlines fly from Washington to Helena?
Recent fares on this route were with Alaska Airlines.
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