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Cheap flights from Seattle to Bucharest from $397

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 3/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Delta Logo
1:40 pm - 10:50 pmSEA-OTP
23h 10m1 stop
Delta Logo
1:55 pm - 11:40 amOTP-SEA
31h 45m1 stop
$534Delta
Find Deal
jue., ene. 29 - lun., feb. 2
Delta Logo
7:10 am - 12:05 pmSEA-OTP
18h 55m2 stops
Delta Logo
6:00 am - 11:40 amOTP-SEA
15h 40m1 stop
$539Delta
Find Deal
jue., ene. 29 - lun., feb. 2
Multiple Airlines Logo
6:50 pm - 7:30 pmSEA-OTP
14h 40m1 stop
Multiple Airlines Logo
8:00 am - 7:17 pmOTP-SEA
21h 17m2 stops
$543Multiple Airlines
Find Deal
jue., ene. 1 - jue., ene. 15
Delta Logo
7:10 am - 12:05 pmSEA-OTP
18h 55m2 stops
Delta Logo
6:00 am - 10:25 pmOTP-SEA
26h 25m2 stops
$549Delta
Find Deal
jue., ene. 29 - lun., feb. 2
SWISS Logo
10:58 am - 3:50 pmSEA-OTP
18h 52m2 stops
SWISS Logo
6:30 am - 10:43 pmOTP-SEA
26h 13m2 stops
$553SWISS
Find Deal
jue., ene. 29 - lun., feb. 2
United Airlines Logo
11:15 pm - 6:35 pmSEA-OTP
33h 20m2 stops
United Airlines Logo
5:55 am - 11:30 amOTP-SEA
39h 35m2 stops
$558United Airlines
Find Deal
dom., dic. 28 - mar., ene. 13
United Airlines Logo
11:15 pm - 6:35 pmSEA-OTP
33h 20m2 stops
United Airlines Logo
5:55 am - 9:15 pmOTP-SEA
49h 20m3 stops
$564United Airlines
Find Deal
dom., dic. 28 - mar., ene. 13
Air Canada Logo
8:10 am - 12:30 pmSEA-OTP
18h 20m2 stops
Air Canada Logo
6:55 am - 10:16 pmOTP-SEA
25h 21m2 stops
$585Air Canada
Find Deal
sáb., feb. 14 - sáb., feb. 21
Multiple Airlines Logo
1:40 pm - 8:10 pmSEA-OTP
20h 30m1 stop
Multiple Airlines Logo
4:50 pm - 11:50 amOTP-SEA
29h 00m1 stop
$601Multiple Airlines
Find Deal
jue., ene. 1 - jue., ene. 8
Turkish Airlines Logo
7:10 pm - 8:25 pmSEA-OTP
15h 15m1 stop
Turkish Airlines Logo
9:45 pm - 5:15 pmOTP-SEA
29h 30m1 stop
$605Turkish Airlines
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jue., abr. 2 - jue., abr. 23

Lufthansa flights from Seattle to Bucharest Otopeni Intl Airport

Our best Lufthansa deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
Lufthansa
Jan 1
SEA2:00 pmSeattle/Tacoma Intl
14h 05m
1 stop
OTP2:05 pmBucharest Otopeni Intl
Jan 8
OTP5:50 amBucharest Otopeni Intl
25h 07m
2 stops
SEA8:57 pmSeattle/Tacoma Intl
$691
Find similar
Lufthansa
Jan 1
SEA7:00 amSeattle/Tacoma Intl
25h 35m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Jan 8
OTP5:50 amBucharest Otopeni Intl
25h 07m
2 stops
SEA8:57 pmSeattle/Tacoma Intl
$715
Find similar
Lufthansa
Dec 8
SEA7:00 amSeattle/Tacoma Intl
25h 35m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Dec 23
OTP2:50 pmBucharest Otopeni Intl
32h 30m
2 stops
SEA1:20 pmSeattle/Tacoma Intl
$757
Find similar

United Airlines flights from Seattle to Bucharest Otopeni Intl Airport

Our best United Airlines deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
United Airlines
Dec 28
SEA11:15 pmSeattle/Tacoma Intl
33h 20m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Jan 13
OTP5:55 amBucharest Otopeni Intl
39h 35m
2 stops
SEA11:30 amSeattle/Tacoma Intl
$558
Find similar
United Airlines
Dec 28
SEA11:15 pmSeattle/Tacoma Intl
33h 20m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Jan 13
OTP5:55 amBucharest Otopeni Intl
49h 20m
3 stops
SEA9:15 pmSeattle/Tacoma Intl
$564
Find similar
United Airlines
Jan 1
SEA7:05 amSeattle/Tacoma Intl
30h 45m
2 stops
OTP11:50 pmBucharest Otopeni Intl
Jan 8
OTP5:50 amBucharest Otopeni Intl
26h 53m
3 stops
SEA10:43 pmSeattle/Tacoma Intl
$728
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bucharest Otopeni Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 19, 2025.
Use the filters below to find and compare flights from Seattle to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/29

1:40 pm-10:50 pm

1 stop23h 10m

Bucharest Otopeni Intl

lun. 2/2

1:55 pm-11:40 am

1 stop31h 45m

$534

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/29

7:10 am-12:05 pm

2 stops18h 55m

Bucharest Otopeni Intl

lun. 2/2

6:00 am-11:40 am

1 stop15h 40m

$539

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/1

6:50 pm-7:30 pm

1 stop14h 40m

Bucharest Otopeni Intl

jue. 1/15

8:00 am-7:17 pm

2 stops21h 17m

$543

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/29

7:10 am-12:05 pm

2 stops18h 55m

Bucharest Otopeni Intl

lun. 2/2

6:00 am-10:25 pm

2 stops26h 25m

$549

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/29

10:58 am-3:50 pm

2 stops18h 52m

Bucharest Otopeni Intl

lun. 2/2

6:30 am-10:43 pm

2 stops26h 13m

$553

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

dom. 12/28

11:15 pm-6:35 pm

2 stops33h 20m

Bucharest Otopeni Intl

mar. 1/13

5:55 am-11:30 am

2 stops39h 35m

$558

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

dom. 12/28

11:15 pm-6:35 pm

2 stops33h 20m

Bucharest Otopeni Intl

mar. 1/13

5:55 am-9:15 pm

3 stops49h 20m

$564

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

sáb. 2/14

8:10 am-12:30 pm

2 stops18h 20m

Bucharest Otopeni Intl

sáb. 2/21

6:55 am-10:16 pm

2 stops25h 21m

$585

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 1/1

1:40 pm-8:10 pm

1 stop20h 30m

Bucharest Otopeni Intl

jue. 1/8

4:50 pm-11:50 am

1 stop29h 00m

$601

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

jue. 4/2

7:10 pm-8:25 pm

1 stop15h 15m

Bucharest Otopeni Intl

jue. 4/23

9:45 pm-5:15 pm

1 stop29h 30m

$605

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Bucharest from

How to get the cheapest flight ticket from Seattle to Bucharest Otopeni Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bucharest Otopeni Intl Airport?

If you aren’t able to travel during the month of October, then book flights to Bucharest Otopeni Intl Airport from Seattle during September instead. Flights to Bucharest Otopeni Intl Airport in September, while not as cheap as those in October, still average around $680.

What is the cheapest day to depart on your flight to Bucharest Otopeni Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Bucharest Otopeni Intl Airport. Tickets to fly out on this day can be as low as $879. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Bucharest Otopeni Intl Airport for around $1,246.

What is the cheapest time of day to depart on your flight to Bucharest Otopeni Intl Airport?

Our most recent data shows that the best time of day to fly to Bucharest Otopeni Intl Airport is in the morning. Flights from Seattle to Bucharest Otopeni Intl Airport during this time can be as low as $812. In the evening is when there is more demand to fly to Bucharest Otopeni Intl Airport, so prices are often more expensive at around $2,198 per ticket.

How far in advance should I book a flight to Bucharest Otopeni Intl Airport?

You are more likely to see cheaper flights to Bucharest Otopeni Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bucharest Otopeni Intl Airport for around $954 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bucharest Otopeni Intl Airport from Seattle for as low as $617 on momondo.

Can stopping save me money on Seattle to Bucharest Otopeni Intl Airport flights?

You could potentially save up to 17% on your flight if you consider stops on a Seattle to Bucharest Otopeni Intl Airport flight.

How have Seattle to Bucharest Otopeni Intl Airport flight prices changed over time?

When to book flights from Seattle to Bucharest Otopeni Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bucharest Otopeni Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bucharest Otopeni Intl Airport (SEA to OTP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bucharest Otopeni Intl Airport

Direct flights

None
There are no direct flights from Seattle to Bucharest Otopeni Intl Airport. There are no popular flight routes from Seattle to Bucharest Otopeni Intl Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bucharest Otopeni Intl by plane?

    There are 5781.4 mi between Seattle/Tacoma Intl and Bucharest Otopeni Intl. A reasonable flight in good conditions will take 14h 05m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport.

  • What documentation or ID do you need to fly to Bucharest Otopeni Intl Airport?

    The travel and health documents you'll need for your trip to Bucharest Otopeni Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bucharest Otopeni Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Bucharest Otopeni Intl Airport?

Best airlines flying from Seattle to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from Seattle to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $581Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
9,023 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $596Free CancellationRating
7.3
4,045 reviews
Search Turkish Airlines flights
KLMPriceFrom $656Free CancellationRating
7.7
1,412 reviews
Search KLM flights
DeltaPriceFrom $772Free CancellationRating
7.9
8,004 reviews
Search Delta flights

Traveling to a place near Bucharest?

Book flights to Bucharest if you plan to visit one of these locations
Otopeni

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Bucharest?

It is quick and easy to find Seattle to Bucharest flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bucharest that suits you.

Can I find flights from Seattle to Bucharest with flexible booking policies on momondo?

All flight searches from Seattle to Bucharest on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Bucharest?

momondo helps you find the best flight between Seattle and Bucharest by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Bucharest right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Bucharest now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bucharest and let you know when they change.

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