BIS - SEA

$210 Find Cheap Flights from Bismarck to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bismarck to Seattle departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bismarck to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bismarck to Seattle, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Bismarck to Seattle (BIS-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bismarck to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bismarck to Seattle

Mon, Aug 18 - Sat, Sep 6
Delta Logo
5:42 pm - 11:54 pmBIS-SEA
8h 12m1 stop
Delta Logo
6:10 am - 2:48 pmSEA-BIS
6h 38m1 stop
$259Delta
Find Deal
Tue, Aug 19 - Sat, Sep 6
United Airlines Logo
1:55 pm - 10:59 pmBIS-SEA
11h 04m2 stops
United Airlines Logo
5:02 am - 12:59 pmSEA-BIS
5h 57m1 stop
$264United Airlines
Find Deal
Sun, Aug 17 - Tue, Aug 26
Delta Logo
5:42 pm - 11:47 pmBIS-SEA
8h 05m1 stop
Delta Logo
11:55 pm - 10:39 amSEA-BIS
8h 44m1 stop
$274Delta
Find Deal
Sun, Aug 17 - Tue, Aug 26
United Airlines Logo
5:11 pm - 10:59 pmBIS-SEA
7h 48m1 stop
United Airlines Logo
1:05 pm - 11:39 pmSEA-BIS
8h 34m2 stops
$341United Airlines
Find Deal
Sat, Aug 30 - Thu, Sep 4
American Airlines Logo
1:22 pm - 8:02 pmBIS-SEA
8h 40m1 stop
American Airlines Logo
10:09 am - 10:26 pmSEA-BIS
10h 17m1 stop
$352American Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
Delta Logo
5:42 pm - 11:47 pmBIS-SEA
8h 05m1 stop
Delta Logo
11:55 pm - 10:33 amSEA-BIS
8h 38m1 stop
$409Delta
Find Deal
Sat, Aug 30 - Thu, Sep 4
United Airlines Logo
5:20 pm - 1:33 pmBIS-SEA
22h 13m2 stops
United Airlines Logo
3:36 pm - 11:39 pmSEA-BIS
6h 03m1 stop
$417United Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
Delta Logo
5:42 pm - 11:47 pmBIS-SEA
8h 05m1 stop
Delta Logo
11:55 pm - 10:33 amSEA-BIS
8h 38m1 stop
$419Delta
Find Deal
Sun, Aug 17 - Mon, Aug 25
American Airlines Logo
6:23 am - 12:45 pmBIS-SEA
8h 22m1 stop
American Airlines Logo
12:46 am - 12:52 pmSEA-BIS
10h 06m1 stop
$426American Airlines
Find Deal
Sun, Aug 17 - Mon, Aug 25
American Airlines Logo
6:23 am - 12:45 pmBIS-SEA
8h 22m1 stop
American Airlines Logo
12:46 am - 2:20 pmSEA-BIS
11h 34m2 stops
$431American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Bismarck to Seattle flights

Get data-powered insights and trends into flights from Bismarck to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Bismarck to Seattle?

What’s the cheapest day of the week to fly from Bismarck to Seattle?

The average price of all round-trip flights from Bismarck to Seattle clicked on KAYAK for each day over the last 12 months.

When flying from Bismarck to Seattle, you should consider leaving on a Monday and avoid Thursdays if you are looking for the best rates. For your return to Bismarck, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Bismarck to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bismarck to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bismarck to Seattle is February, where tickets cost $317 (return) on average. On the other hand, the most expensive months are May and November, where the average cost of round-trip tickets is $666 and $618 respectively.

Good to know

Low seasonOctober
Cheapest flight$210
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Bismarck to Seattle

When to book flights from Bismarck to Seattle

Are your dates flexible? Find out the best times to travel from Bismarck to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Bismarck to Seattle

  • What is the cheapest flight from Bismarck to Seattle?

    In the last 3 days, the lowest price for a flight from Bismarck to Seattle was $210 for a one-way ticket and $259 for a round-trip.

  • Do I need a passport to fly between Bismarck and Seattle?

    A passport is not required to fly from Bismarck to Seattle.

  • Which aircraft models fly most regularly from Bismarck to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Bismarck to Seattle?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Bismarck and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Bismarck to Seattle, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Bismarck to Seattle are Delta and United Airlines. With an average price for the route of $488 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $574 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Bismarck to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bismarck to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bismarck to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Bismarck is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bismarck to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Bismarck with another airline. Booking your flights between Bismarck and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bismarck to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Bismarck up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Bismarck to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Bismarck to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bismarck to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.3Food
8.5Crew
8.2Boarding
7.9Entertainment
7.9Comfort
Airline reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

4.0 OkayAnonymous, Jul 2025ICN - SEA
Read more Delta reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything you need to know for your flight from Bismarck to Seattle

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