Alaska AirlinesDepart06:37
Thu, Nov 12BOI → IAD
6h 50m · 1 stop
$192one way, per person
View deal
- Cheapest fare
- $192
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 6h 20m
Alaska Airlines · Thu, Nov 12
from $192
Usually 1+ stop
3,280 km
Get a price alert
We'll email you when Boise → Washington drops to your price. It's free, and you can stop any time.
Today's cheapest fare is $192. We'll send one email to confirm. See our privacy policy.
Cheapest month to fly from Boise to Washington
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.
See every date in November 2026 →Plan the rest of your trip to Washington
Where to stay, what to do and getting around, from our travel partners.
About flights from Boise to Washington
Boise (BOI) and Washington (WAS) are about 3,280 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 20m. Over the next few months, one-way fares start from $192, 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 Boise to Washington?
The cheapest one-way fare we've seen recently is $192 with Alaska Airlines, departing Thursday, November 12, 2026.
What is the cheapest month to fly from Boise to Washington?
November 2026 currently has the lowest fares, from $192 one way.
Are there direct flights from Boise to Washington?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Boise to Washington?
The quickest journey we've seen takes about 6h 20m. Boise and Washington are around 3,280 km apart.
Which airlines fly from Boise to Washington?
Recent fares on this route were with Alaska Airlines.
More cheap flights from Boise
- Boise to Dallasfrom $149
- Boise to Portlandfrom $136
- Boise to Seattlefrom $216
- Boise to Chicagofrom $195
- Boise to Phoenixfrom $150
- Boise to Bostonfrom $211
- Boise to Denverfrom $156
- Boise to Los Angelesfrom $241
- Boise to Ontariofrom $133
- Boise to Oklahoma Cityfrom $252
- Boise to New Yorkfrom $257
- Boise to Long Beachfrom $287