Route guide · 662 miles
Cheap Flights from Billings to Seattle
BIL → SEA · Nonstop 1h 51m · Live round-trip fares
Flying from Billings to Seattle doesn't have to drain your wallet. This 662-mile hop takes about 1h 51m nonstop, and fares swing a lot depending on the week you pick. Travelers who book roughly 2–4 weeks out usually come out ahead — set a free alert and let the deals come to you.
Live fares for BIL → SEA are updating. Use the search below for real-time prices.
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Flight time
1h 51m
Nonstop, typical
Distance
662 mi
BIL → SEA
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
Alaska Airlines
Nonstop flights from Billings to Seattle
Want to skip the layover? Nonstops from Billings to Seattle are flown by Alaska Airlines, getting you there in about 1h 51m. For the lowest fares, book around 2–4 weeks before departure — last-minute nonstops on this route rarely come cheap.
Booking insights: Billings → Seattle
- Distance: 662 miles · nonstop flight time: 1h 51m.
- Rule of thumb for this route: the sweet spot is usually 2–4 weeks before departure.
- Tuesday and Wednesday departures usually undercut Friday and Sunday fares on routes like this one.
- Set a free Airfare Deal alert instead of checking daily — the best fares can sell out in hours.
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Flying from Billings to Seattle: what you need to know
The flight
Billings to Seattle covers 662 miles, and a nonstop gets it done in about 1h 51m. That's long enough to settle in with a coffee and a downloaded show, short enough that a connection rarely makes sense — a layover usually doubles your travel day to save very little.
Airlines on this route
Alaska Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Billings (BIL)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Billings airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Seattle (SEA)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Seattle airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Seattle to Billings fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 662 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
- Flexible dates? Search a few days either side — one day can change the fare a lot.
- Morning flights are delayed less often than evening ones — earlier departures have the best on-time record.
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
Billings to Seattle flight FAQs
How long is the flight from BIL to SEA?
Nonstop flights from Billings to Seattle take about 1h 51m and cover roughly 662 miles. One-stop itineraries add 2–4 hours depending on the layover city.
Are there nonstop flights from Billings to Seattle?
Yes — look for Alaska Airlines on this route. Nonstop seats are usually priced best 2–4 weeks before departure.
What is the cheapest month to fly from Billings to Seattle?
There's no single magic month, but prices on this route generally soften in the shoulder season, when demand dips after the holidays and again in early fall. A free fare alert is the easiest way to catch those windows.
How much are last minute flights from BIL to SEA?
Book inside the final week and you'll usually pay a premium on BIL to SEA. Fares booked 2–4 weeks ahead are almost always kinder.
What is a good round-trip deal from Billings to Seattle?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Billings to Seattle?
The main carriers on this route are Alaska Airlines. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Billings airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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