HRL - SEA

$185 Find Cheap Flights from Harlingen to Seattle - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$338
Typical prices: $354-$541
United Airlines
Mon 10/29Sun 11/11
HRL - SEA • 1 stop
Cheapest one-way
$185
Typical prices: $163-$279
Southwest
Wed 9/26
HRL - SEA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Harlingen and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
February
Cheapest • 38% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Houston Hobby (HOU)
Cheapest • Avg $343 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 7h 08m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Harlingen to Seattle (HRL-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Harlingen to Seattle

Thu, Oct 29 - Wed, Nov 11
United Airlines Logo
5:05 am - 1:25 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
10h 20m1 stop Houston George Bush Intcntl
United Airlines Logo
7:05 am - 4:01 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
6h 56m1 stop Houston George Bush Intcntl
$338United Airlines
Thu, Oct 15 - Tue, Oct 20
American Airlines Logo
6:42 pm - 12:10 amHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 28m1 stop Dallas/Fort Worth
American Airlines Logo
11:45 pm - 10:08 amSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
8h 23m1 stop Dallas/Fort Worth
$338American Airlines
Thu, Oct 29 - Wed, Nov 11
United Airlines Logo
1:59 pm - 7:17 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 18m1 stop Houston George Bush Intcntl
United Airlines Logo
9:05 am - 10:48 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
11h 43m2 stops San Francisco Houston George Bush Intcntl
$343United Airlines
Tue, Dec 8 - Sat, Dec 12
American Airlines Logo
10:44 am - 4:54 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
8h 10m1 stop Dallas/Fort Worth
American Airlines Logo
5:10 am - 1:56 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
6h 46m1 stop Dallas/Fort Worth
$351American Airlines
Thu, Oct 29 - Wed, Nov 11
Southwest Logo
5:30 pm - 1:00 amHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
9h 30m2 stops Austin Bergstrom Las Vegas Harry Reid Intl
Southwest Logo
9:30 am - 9:45 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
10h 15m2 stops Denver Intl Houston Hobby
$358Southwest
Thu, Dec 3 - Sun, Dec 6
American Airlines Logo
5:40 am - 11:12 amHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 32m1 stop Dallas/Fort Worth
American Airlines Logo
12:25 am - 10:14 amSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
7h 49m1 stop Dallas/Fort Worth
$359American Airlines
Thu, Oct 15 - Tue, Oct 20
Southwest Logo
11:55 am - 6:10 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Austin Bergstrom
Southwest Logo
5:35 am - 5:35 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
10h 00m2 stops Phoenix Sky Harbor Intl Dallas Love Field
$392Southwest
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
5:05 am - 4:14 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
13h 09m2 stops Houston George Bush Intcntl San Francisco
United Airlines Logo
7:00 am - 3:59 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
6h 59m1 stop Houston George Bush Intcntl
$410United Airlines
Sat, Sep 19 - Wed, Sep 23
Southwest Logo
6:05 am - 5:45 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
13h 40m1 stop Houston Hobby
Southwest Logo
8:50 am - 9:50 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
11h 00m1 stop Houston Hobby
$416Southwest
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
7:15 am - 12:48 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 33m1 stop Houston George Bush Intcntl
United Airlines Logo
7:05 am - 4:01 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
6h 56m1 stop Houston George Bush Intcntl
$417United Airlines
Booking Insights

Price, demand and travel trends for Harlingen to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Harlingen to Seattle with more confidence.

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

Round-trip flights from Harlingen to Seattle start at $338. Prices are below average for this route right now, with typical round-trip fares ranging from $354 to $541. The lowest price found in the past 5 days was $338 on United Airlines.

What's the cheapest day of the week to fly from Harlingen to Seattle?

Thursday is the cheapest day of the week to fly from Harlingen to Seattle, it is 17% cheaper than the average day. Friday is the most expensive day with flight prices 32% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Harlingen to Seattle at $263 round-trip.
  • March ($836) and January ($604) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 217% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Harlingen to Seattle flights

Low season

March

Cheapest flight

$185
Best time to beat the crowds but there is an average 96% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Harlingen to Seattle

When to book flights from Harlingen to Seattle

Are your dates flexible? Find out the best times to travel from Harlingen to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Harlingen to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Harlingen to Seattle?

    Flights from Harlingen to Seattle usually depart from Harlingen Valley Intl (HRL) and arrive at Seattle/Tacoma Intl (SEA).

  • What cabin classes can I book on flights from Harlingen to Seattle?

    Only Economy Class is available on flights from Harlingen to Seattle.

  • Which airports do connecting flights from Harlingen to Seattle pass through?

    One-stop flights from Harlingen to Seattle most commonly connect through:

    • Dallas/Fort Worth (DFW) - 70% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 15% of one-stop connections
    • Austin Bergstrom (AUS) - 11% of one-stop connections
    • Houston Hobby (HOU) - 2% of one-stop connections

    Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Harlingen to Seattle?

    Yes. Being flexible with your travel dates can save you up to 38% on the Harlingen to Seattle route. Thursday is the cheapest departure day at $354 round-trip on average, while Friday is the most expensive at $565, a difference of $211. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

  • How long is a flight from Harlingen to Seattle?

    A nonstop flight from Harlingen to Seattle takes 0h 00m, covering 1,984 miles.

  • Do I need a passport to fly from Harlingen to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Harlingen to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $338 to $2,274. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Harlingen to Seattle looking right now?

    One-way fares from Harlingen to Seattle are currently lower than usual. Average one-way flight prices are about $229, which is 5% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Harlingen to Seattle?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 7h 08m, compared with 7h 45m via Houston George Bush Intcntl (IAH) and 8h 09m via Austin Bergstrom (AUS).

  • What is the time difference between Harlingen and Seattle?

    Seattle is 2 hours behind Harlingen (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    · Fox
    · Europcar
    · Thrifty
    · Budget
    · Dollar

  • How much should I expect to pay for a Harlingen to Seattle flight?

    Round-trip flights from Harlingen to Seattle range from $354 to $541, with an average of $426 over the past 12 months. Anything below $354 counts as a good deal.

Your guide to booking Harlingen to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Friday. On this route, Thursday flights average $354 - about $211 less than Friday (37% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Harlingen to Seattle trip for February. Fares historically average $263 round-trip in that month - typically $573 less than the most expensive month, which is March (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Harlingen to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Car rentals in Seattle
Hotels in Seattle
Vacations in Seattle