$104 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 4/21. 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, 0 bags

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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Cheap Flights from Harlingen to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop$253
Spokane
Spokane2 stops$482
Seattle
Seattle1 stop$253
Spokane
Spokane2 stops$482

Book Cheap Harlingen to Washington Plane Tickets

 
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, Apr 8 - Mon, Apr 13
American Airlines Logo
8:03 pm - 12:44 am
HRL
-
SEA
6h 41m
1 stop
American Airlines Logo
12:59 am - 10:17 am
SEA
-
HRL
7h 18m
1 stop
$253American Airlines
Fri, Apr 24 - Mon, Apr 27
American Airlines Logo
7:53 pm - 12:44 am
HRL
-
SEA
6h 51m
1 stop
American Airlines Logo
11:55 pm - 10:17 am
SEA
-
HRL
8h 22m
1 stop
$261American Airlines
Thu, Aug 13 - Wed, Aug 19
United Airlines Logo
5:16 pm - 10:51 pm
HRL
-
PDX
7h 35m
1 stop
United Airlines Logo
7:13 am - 3:34 pm
PDX
-
HRL
6h 21m
1 stop
$301United Airlines
Thu, Aug 13 - Wed, Aug 19
United Airlines Logo
5:16 pm - 10:51 pm
HRL
-
PDX
7h 35m
1 stop
United Airlines Logo
10:35 am - 9:44 pm
PDX
-
HRL
9h 09m
2 stops
$306United Airlines
Thu, Aug 13 - Wed, Aug 19
United Airlines Logo
5:16 pm - 12:47 am
HRL
-
PDX
9h 31m
2 stops
United Airlines Logo
10:35 am - 9:44 pm
PDX
-
HRL
9h 09m
2 stops
$325United Airlines
Wed, Apr 8 - Tue, Apr 14
Southwest Logo
10:45 am - 5:45 pm
HRL
-
SEA
9h 00m
2 stops
Southwest Logo
8:25 am - 8:55 pm
SEA
-
HRL
10h 30m
2 stops
$337Southwest
Wed, Apr 8 - Tue, Apr 14
American Airlines Logo
8:03 pm - 12:44 am
HRL
-
SEA
6h 41m
1 stop
American Airlines Logo
11:11 am - 10:51 pm
SEA
-
HRL
9h 40m
2 stops
$346American Airlines
Fri, Apr 24 - Sun, Apr 26
American Airlines Logo
2:47 pm - 10:58 pm
HRL
-
SEA
10h 11m
2 stops
American Airlines Logo
12:59 am - 10:17 am
SEA
-
HRL
7h 18m
1 stop
$359American Airlines
Fri, Apr 24 - Mon, Apr 27
Southwest Logo
6:00 pm - 12:55 am
HRL
-
SEA
8h 55m
2 stops
Southwest Logo
10:55 am - 11:00 pm
SEA
-
HRL
10h 05m
2 stops
$399Southwest
Tue, Mar 31 - Sat, Apr 4
Southwest Logo
5:05 pm - 12:10 am
HRL
-
GEG
9h 05m
2 stops
Southwest Logo
10:30 am - 11:55 pm
GEG
-
HRL
11h 25m
2 stops
$586Southwest
Booking Insights

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 $250 (return) on average. On the other hand, the most expensive months are April and January, when the average cost of round-trip tickets is $626 and $604 respectively.

Good to know

Low seasonSeptember
Cheapest flight$104
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 29% increase in price.
Flight from Harlingen to Portland

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.

Reviews of the 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
SouthwestOverall score based on 4319 reviews
7.5Entertainment
8.6Crew
8.0Comfort
8.1Boarding
7.0Food
Airline reviews

We had a 5 hour delay on the tarmac in Baltimore

2.0 MediocreDavid, Mar 2026
ALB - BWI
Read more Southwest reviews

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Delayed, toilets did not flush, pilot parked to far away from Gate

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Check in was rough because the check in crew did not know how to manage my international visa documents. Required a long process and 4 people to finally be able to proceed to security. They told us incorrect information several times before acknowledging we did indeed have everything we needed from the start.

Poor communication ahead of time about flight delays and old planes/other equipment.

Mechanical issue delayed us 2hrs and then once we landed sat on tarmac for 30mins because someone left a vehicle in front of the gaye

The crew was excellent and overall the flight was good. No complaints.

Like all of the flights I took to get down to Dallas. They were delayed

Forced to check bags. Crew uninterested in collecting trash. Unclean seats.

Flight pulled out on time but sat on runway for 30 mins. It was extremely cold in the aircraft despite wearing a winter coat. Surprisingly they had a vegetarian meal but could have some better snack choices for a 8 hour flight.

We had a male flight attendant who was super attentive and wonderful! Very professional. I have both gluten and dairy intolerance, and was only able to get a gluten free part, and not the dairy free part of the meal. Easy to order ahead of time and I appreciate being able to do that.

It was a train wreck but on an airplane. First off, flight was delayed then we board only to hear two announcements, First weather delays in Orlando and second backup battery warning on emergency lights. After sitting on the plane for almost 2 hours they have us deplane due to the maintenance issue. We were told they were getting another plane. In the mean time, I notice another American- Orlando flight and ask the gate agent if I can switch. He says he cant help me and I'd have to walk to A13 from A37. Really!? I get down there and get a seat only to get an announcement my original flight was RE-boarding. The Then inflight there's no communication and I notice on flightaware were circling over the Gulf of America. I call the flight attendant and of course she has no clue and apparently 5m later the pilot finally tells us about another delay. Why does American always have these service and delay issues? They are my LAST choice in flights now!

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

Information on your arrival and departure airports