$215 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 6/20. 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 Washington

 
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
Seattle2 stops$248
Spokane
Spokane1 stop$305
Seattle
Seattle2 stops$248
Spokane
Spokane1 stop$305

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

Recent round-trip flight deals from Harlingen to Washington

Wed, Sep 10 - Tue, Sep 16
Southwest Logo
3:55 pm - 12:05 amHRL-SEA
10h 10m2 stops
Southwest Logo
10:45 pm - 11:45 amSEA-HRL
11h 00m1 stop
$248Southwest
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Thu, Sep 11 - Tue, Sep 16
American Airlines Logo
10:11 am - 4:40 pmHRL-SEA
8h 29m1 stop
American Airlines Logo
6:11 am - 6:00 pmSEA-HRL
9h 49m2 stops
$272American Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
Southwest Logo
3:55 pm - 12:05 amHRL-SEA
10h 10m2 stops
Southwest Logo
7:00 am - 9:25 pmSEA-HRL
12h 25m2 stops
$273Southwest
Find Deal
Fri, Sep 12 - Tue, Sep 16
Southwest Logo
1:40 pm - 9:45 pmHRL-SEA
10h 05m2 stops
Southwest Logo
10:45 pm - 11:45 amSEA-HRL
11h 00m1 stop
$274Southwest
Find Deal
Fri, Sep 12 - Tue, Sep 16
Southwest Logo
1:40 pm - 9:45 pmHRL-SEA
10h 05m2 stops
Southwest Logo
7:00 am - 9:25 pmSEA-HRL
12h 25m2 stops
$299Southwest
Find Deal
Wed, Aug 27 - Wed, Sep 10
American Airlines Logo
6:30 pm - 10:55 pmHRL-GEG
6h 25m1 stop
American Airlines Logo
12:35 pm - 10:57 pmGEG-HRL
8h 22m1 stop
$305American Airlines
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Mon, Jul 7 - Thu, Jul 10
American Airlines Logo
7:59 pm - 12:27 amHRL-PDX
6h 28m1 stop
American Airlines Logo
12:59 am - 9:37 amPDX-HRL
6h 38m1 stop
$339American Airlines
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Mon, Jul 7 - Fri, Jul 11
United Airlines Logo
5:20 pm - 10:33 pmHRL-PDX
7h 13m1 stop
United Airlines Logo
7:04 am - 4:00 pmPDX-HRL
6h 56m1 stop
$388United Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 10
United Airlines Logo
7:00 am - 11:05 pmHRL-GEG
18h 05m2 stops
United Airlines Logo
7:23 am - 9:52 pmGEG-HRL
12h 29m2 stops
$422United Airlines
Find Deal
Fri, Sep 12 - Tue, Sep 16
United Airlines Logo
5:25 pm - 1:30 pmHRL-SEA
22h 05m3 stops
United Airlines Logo
5:07 am - 7:33 pmSEA-HRL
12h 26m2 stops
$427United Airlines
Find Deal
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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 February, when tickets cost $263 (return) on average. On the other hand, the most expensive months are July and January, when the average cost of round-trip tickets is $692 and $558 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 seasonApril
Cheapest flight$215
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly and prices are also 19% lower on average.
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 7946 reviews
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

8.0 ExcellentSunderesh, May 2025AUS - ATL
Read more Delta reviews

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

Food from the flight from Atlanta to Santiago was very poor..

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.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

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.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

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 you need to know for your flight from Harlingen to Washington

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