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$369+ Cheap flights from Seattle to Brownsville (SEA - BRO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRO
Jul 6 — Jul 131
Mon 7/6
Mon 7/13
1 adult, Economy
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Cheap flight deals from Seattle to Brownsville

Cheapest flights from Seattle to Brownsville
Explore the most affordable flight options available from Seattle to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 6, 2026.

This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:59 pm
SEA
-
BRO
1 stop9h 24m
United Airlines
Wed 8/2612:05 pm
BRO
-
SEA
1 stop9h 03m
United Airlines
Deal found 6/4$369
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:03 am
SEA
-
BRO
2 stops8h 56m
United Airlines
Sat 8/227:15 am
BRO
-
SEA
2 stops10h 59m
United Airlines
Deal found 6/4$395
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:05 am
SEA
-
BRO
1 stop9h 39m
United Airlines
Mon 7/134:44 pm
BRO
-
SEA
1 stop7h 58m
United Airlines
Deal found 6/2$440
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:03 am
SEA
-
BRO
1 stop6h 35m
United Airlines
Tue 11/37:10 am
BRO
-
SEA
1 stop7h 35m
United Airlines
Deal found 6/4$479

Find flight deals from Seattle to Brownsville

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brownsville (BRO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$469
Provider with most accurate pricing for Seattle/Tacoma Intl-Brownsville South Padre Is. Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Brownsville South Padre Is. Intl flights.
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From Seattle/Tacoma Intl to Brownsville South Padre Is. Intl
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in June 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Brownsville 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, Cheapflights users made 2,558,603 searches. Data last updated June 6, 2026.
Use the filters below to find and compare flights from Seattle to Brownsville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 8/20

7:00 am-6:13 pm

1 stop9h 13m

Brownsville South Padre Is. Intl

Sat 8/22

12:05 pm-8:43 pm

2 stops10h 38m

$374

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 8/19

11:03 am-9:59 pm

2 stops8h 56m

Brownsville South Padre Is. Intl

Wed 8/26

7:15 am-4:14 pm

2 stops10h 59m

$410

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sat 10/31

9:02 am-11:33 pm

2 stops12h 31m

Brownsville South Padre Is. Intl

Tue 11/3

9:30 am-9:56 pm

2 stops14h 26m

$489
Quickest round-trip

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Mon 6/29

5:00 am-3:57 pm

1 stop8h 57m

Brownsville South Padre Is. Intl

Mon 7/6

12:10 pm-7:12 pm

1 stop9h 02m

$598

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Mon 8/3

11:49 pm-9:52 pm

1 stop20h 03m

Brownsville South Padre Is. Intl

Sat 8/8

4:44 pm-10:42 pm

1 stop7h 58m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Sorted by cheapest first

Compare providers for flights from Seattle to Brownsville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Brownsville in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Brownsville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Brownsville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Brownsville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Brownsville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Brownsville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Brownsville

Have a flexible travel schedule? Discover the best time to fly to Brownsville from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Brownsville

What is the cheapest month to book a flight from Seattle to Brownsville?

Currently, January is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $328). Flying from Seattle to Brownsville in December is currently the most expensive (average of $722). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Brownsville?

Reviews of airlines servicing Brownsville

Get insights into the airlines that provide service to Brownsville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brownsville. Reviews last updated June 6, 2026.
Get a feel of what it's like to fly with United Airlines and American Airlines from Seattle to Brownsville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,777 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
9,777 reviews
United Airlines
7.4
Good
9,777 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
American Airlines
7.1
Good
11,651 reviews
United Airlines
7.4
Good
9,777 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from Seattle to Brownsville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Brownsville?

    United Airlines can get you from Seattle to Brownsville in just under 9h 13m. Your travel time can differ by up to . Seattle and Brownsville are separated by a distance of 2010 mi.

  • What are the cheapest airlines flying from Seattle to Brownsville round-trip?

    Cheapflights users have booked flights from Seattle to Brownsville round-trip from $308. Another airline that can offer you cheap pricing is United Airlines. You may be able to fly from Seattle to Brownsville for 36% less than the average price by searching for these airlines.

  • Can I find deals for flights from Seattle to Brownsville that include hotel bookings?

    Yes. In addition to deals on Seattle to Brownsville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Brownsville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Brownsville.

  • Can I find deals for business class flights from Seattle to Brownsville?

    Yes. Cheapflights offers flight deals from Seattle to Brownsville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Brownsville?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $328). Flying from Seattle to Brownsville in December is currently the most expensive (average of $722). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Seattle to Brownsville

Discover the top 2 airlines that operate flights from Seattle to Brownsville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$462FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$314Average$500FlexibilityNo cancel feeOn-time69%

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