$131 Find Cheap Flights from Harlingen to Washington

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Harlingen to Washington departing on 6/7. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Washington, 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 Harlingen to Washington, as well as popular online travel agencies
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Best Washington Flight Deals from Harlingen

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattle1 stop$307
Seattle
Seattle1 stop$307

Cheap Flights from Harlingen to Washington

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Washington 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.

Recent round-trip flight deals from Harlingen to Washington

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Harlingen to Washington.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
7:59 pm - 12:44 amHRL-SEA
6h 45m1 stop
American Airlines Logo
1:22 am - 9:35 amSEA-HRL
6h 13m1 stop
$307American Airlines
Find Deal
Tue, Jun 10 - Mon, Jun 16
American Airlines Logo
7:59 pm - 12:43 amHRL-SEA
6h 44m1 stop
American Airlines Logo
5:15 am - 3:57 pmSEA-HRL
8h 42m1 stop
$315American Airlines
Find Deal
Tue, Jul 8 - Thu, Jul 17
American Airlines Logo
7:59 pm - 12:44 amHRL-SEA
6h 45m1 stop
American Airlines Logo
11:32 pm - 9:35 amSEA-HRL
8h 03m1 stop
$343American Airlines
Find Deal
Tue, Jun 10 - Tue, Jun 17
Southwest Logo
6:05 pm - 1:15 amHRL-SEA
9h 10m2 stops
Southwest Logo
10:40 pm - 8:40 amSEA-HRL
8h 00m1 stop
$348Southwest
Find Deal
Wed, Jul 9 - Fri, Jul 18
Southwest Logo
9:45 am - 4:10 pmHRL-SEA
8h 25m1 stop
Southwest Logo
10:40 pm - 8:40 amSEA-HRL
8h 00m1 stop
$362Southwest
Find Deal
Wed, Jul 9 - Fri, Jul 18
American Airlines Logo
7:59 pm - 12:43 amHRL-SEA
6h 44m1 stop
American Airlines Logo
12:55 am - 9:37 amSEA-HRL
6h 42m1 stop
$377American Airlines
Find Deal
Mon, Jul 7 - Thu, Jul 10
Southwest Logo
6:05 pm - 1:15 amHRL-SEA
9h 10m2 stops
Southwest Logo
5:00 am - 4:30 pmSEA-HRL
9h 30m2 stops
$379Southwest
Find Deal
Wed, Jul 9 - Fri, Jul 18
United Airlines Logo
5:20 pm - 11:00 pmHRL-SEA
7h 40m1 stop
United Airlines Logo
6:25 am - 7:25 pmSEA-HRL
11h 00m2 stops
$384United Airlines
Find Deal
Tue, Jun 10 - Tue, Jun 17
United Airlines Logo
2:07 pm - 12:59 amHRL-SEA
12h 52m2 stops
United Airlines Logo
6:25 am - 7:25 pmSEA-HRL
11h 00m2 stops
$389United Airlines
Find Deal
Tue, Jun 10 - Tue, Jun 17
United Airlines Logo
1:59 pm - 9:12 pmHRL-SEA
9h 13m1 stop
United Airlines Logo
6:45 am - 9:50 pmSEA-HRL
13h 05m2 stops
$410United Airlines
Find Deal
Tue, Jul 8 - Thu, Jul 17
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KAYAK's insights & trends for Harlingen to Washington flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to Washington, 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 Harlingen to Washington is March, when tickets cost $312 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $659 and $585 respectively.

What’s the cheapest day of the week to fly from Harlingen to Washington?

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

Your flight ticket price will generally be cheaper if you fly to Washington on a Thursday and more expensive on a Saturday. On your return trip to Harlingen, you should consider flying back on a Thursday, and avoid Mondays for better deals.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$131
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly with an average 20% increase in price.
Flight from Harlingen to Seattle

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Harlingen to Washington?

    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 Harlingen to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Harlingen to Washington 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 Harlingen to Washington?

    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 from Harlingen to Washington with an airline and back with another airline.

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

    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 from Harlingen to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally in the morning, when round-trip flights cost $452 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Washington is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $630.

Top 3 airlines serving from Harlingen to Washington

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to Washington. 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 Harlingen to Washington? 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 7934 reviews
8.2Boarding
7.9Entertainment
8.5Crew
7.9Comfort
7.3Food
Airline reviews

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

6.0 GoodAnonymous, Apr 2025MIA - SEA
Read more Delta reviews

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

Flight left early and arrived early. the whole trip was excellent.

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

The seats are uncomfortable, feels like a small seat pad on plywood.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

leg space better than expected. two washrooms for one plane isn't enough.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

Food choices were very limited. Taste of the dishes was average.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

Oh my gosh, I loved my experience with United! they made me want to travel more often.

How badly can you screw up baggage claim? We were told to go to baggage claim too for our bags from this flight. Another flights bags were there. They finished up. More bags from a different flight arrived. Our bags did not Finally the baggage claim belt stopped working and and are flight was still listed on the arrivals for that baggage claim 2. And then nothing It turns out that they had been delivered not only the United baggage claim but far away on a Delta baggage claim No I never told us. It was only the people looking around who had been on the flight But I’m sure there was plenty of time for the employees to raffle through the bags and steal whatever they wanted

Took off on time and successfully avoided weather that looked to be a problem along the way

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

Everything was on time, we arrived early, everything worked well.

Angela was the best fa ever. She made that 8 hour flight a breeze

This was a pleasant, short flight and the crew was friendly.

The service and food needs to improve to catch up with other international flights

Everything you need to know for your flight from Harlingen to Washington

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