Billings (BIL) to Seattle (SEA) flights
An economy award from Billings (BIL) to Seattle (SEA) starts at 4,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. One airline flies nonstop from Billings (BIL) to Seattle (SEA): Alaska Airlines. The two airports are 662 miles (1,065 km) apart. Alaska Airlines is in oneworld. There are also 3 ways to fly it with one stop, through Portland, Salt Lake City and Denver.
How many miles BIL to SEA costs
Economy, one way, on the nonstop flights, from the Award Flight Pricer's award charts. Ranges run off-peak to peak; "from" is the floor of a dynamic price.
| Program | Economy | Taxes and fees |
|---|---|---|
| Alaska Atmos RewardsOn Alaska Airlines | 4,500 | $5.60 |
| Iberia ClubOn Alaska Airlines | 9,000 | $5.60 |
| Cathay Pacific Asia MilesOn Alaska Airlines | 10,000 | $5.60 |
| Starlux (COSMILE)On Alaska Airlines | 10,000 | $38.60 |
| JAL Mileage BankOn Alaska Airlines | 12,000 | $5.60 |
| American AAdvantageOn Alaska Airlines | 12,500 | $5.60 |
| Qatar Airways Privilege ClubOn Alaska Airlines | 13,000 | $5.60 |
| British Airways ClubOn Alaska Airlines | 16,000 | $5.60 |
| Qantas Frequent FlyerOn Alaska Airlines | 16,100 | $5.60 |
| Finnair PlusOn Alaska Airlines | 17,500 | $5.60 |
Business and first class prices are in the Award Flight Pricer. Chart prices need award space on your date, so search it before you transfer points.
Compare every program in the Award Flight PricerAirlines flying nonstop from BIL to SEA
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
Book BIL to SEA with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
BIL to SEA with one stop
3 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Portland (PDX)Alaska Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Denver (DEN)United Airlines the whole way
+3
BIL to SEA: common questions
How many miles does BIL to SEA cost?
In economy it starts at 4,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Next cheapest: Iberia Club (9,000), Cathay Pacific Asia Miles (10,000) and Starlux (COSMILE) (10,000). These are award chart prices from the Award Flight Pricer. Programs that price dynamically can cost more on busy dates, so check yours before you transfer points. Business and first class prices are in the pricer too.
Which airlines fly nonstop from BIL to SEA?
Alaska Airlines (oneworld) flies nonstop from Billings (BIL) to Seattle (SEA).
How far is Billings from Seattle by plane?
Billings (BIL) and Seattle (SEA) are 662 miles (1,065 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book BIL to SEA award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
Where can I connect between Billings and Seattle?
The most direct connections are through Portland (PDX), Salt Lake City (SLC) and Denver (DEN). On 3 of them the same airline flies both flights, for example Alaska Airlines through Portland.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.