SFO - HRL

$327 Find Cheap Flights from San Francisco to Harlingen

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Harlingen departing on 1/28. 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 Harlingen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Harlingen, 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 San Francisco to Harlingen, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$327
Overall average: $320
United Airlines
Wed 1/28Sat 1/31
SFO - HRL • 1 stop
Cheapest one-way
$590
United Airlines
Fri 3/13
SFO - HRL • 2 stops
When to travel
January
Cheapest • 28% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Harlingen!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Harlingen (SFO-HRL)

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

Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
1:19 pm - 9:59 pm
SFO
-
HRL
6h 40m1 stop
United Airlines Logo
9:20 am - 2:56 pm
HRL
-
SFO
7h 36m1 stop
$327United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
7:00 am - 9:59 pm
SFO
-
HRL
12h 59m2 stops
United Airlines Logo
5:25 pm - 10:59 pm
HRL
-
SFO
7h 34m1 stop
$380United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
7:00 am - 9:59 pm
SFO
-
HRL
12h 59m2 stops
United Airlines Logo
9:20 am - 2:56 pm
HRL
-
SFO
7h 36m1 stop
$390United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
7:00 am - 9:59 pm
SFO
-
HRL
12h 59m2 stops
United Airlines Logo
9:20 am - 9:41 pm
HRL
-
SFO
14h 21m2 stops
$445United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
7:00 am - 9:59 pm
SFO
-
HRL
12h 59m2 stops
United Airlines Logo
9:20 am - 9:41 pm
HRL
-
SFO
14h 21m2 stops
$465United Airlines
Mon, Dec 29 - Mon, Jan 5
Southwest Logo
1:20 pm - 10:50 pm
SFO
-
HRL
7h 30m1 stop
Southwest Logo
12:15 pm - 8:10 pm
HRL
-
SFO
9h 55m2 stops
$673Southwest
Mon, Dec 29 - Mon, Jan 5
Southwest Logo
11:20 am - 11:55 pm
SFO
-
HRL
10h 35m2 stops
Southwest Logo
12:15 pm - 8:10 pm
HRL
-
SFO
9h 55m2 stops
$713Southwest
Mon, Dec 29 - Mon, Jan 5
Southwest Logo
1:20 pm - 10:50 pm
SFO
-
HRL
7h 30m1 stop
Southwest Logo
6:50 am - 11:25 am
HRL
-
SFO
6h 35m1 stop
$739Southwest
Fri, Dec 26 - Sun, Jan 4
United Airlines Logo
12:30 am - 11:13 am
SFO
-
HRL
8h 43m1 stop
United Airlines Logo
5:20 pm - 8:48 am
HRL
-
SFO
17h 28m2 stops
$834United Airlines
Sat, Dec 27 - Sun, Jan 4
American Airlines Logo
12:07 pm - 10:48 pm
SFO
-
HRL
8h 41m1 stop
American Airlines Logo
8:11 pm - 11:15 am
HRL
-
SFO
17h 04m1 stop
$882American Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Harlingen flights

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

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

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

Your flight ticket price will generally be cheaper if you fly to Harlingen on a Friday and more expensive on a Wednesday. On your return trip to San Francisco, you should consider flying back on a Wednesday, and avoid Tuesdays for better deals.

What is the cheapest month to fly from San Francisco to Harlingen?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Harlingen, 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 San Francisco to Harlingen is January, where tickets cost $320 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $778 and $599 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flight$327
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from San Francisco to Harlingen

When to book flights from San Francisco to Harlingen

Are your dates flexible? Find out the best times to travel from San Francisco to Harlingen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Harlingen

  • What is the cheapest flight from San Francisco to Harlingen?

    In the last 3 days, the lowest price for a flight from San Francisco to Harlingen was $590 for a one-way ticket and $327 for a round-trip.

  • Do I need a passport to fly between San Francisco and Harlingen?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from San Francisco to Harlingen?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Harlingen?

    oneworld is the only airline alliance operating flights between San Francisco and Harlingen.

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

    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 San Francisco to Harlingen.

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

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

    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 to Harlingen with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and HRL can sometimes prove cheaper using this method.

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

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

Reviews of the top airline flying from San Francisco to Harlingen

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Harlingen. 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 San Francisco to Harlingen? 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.
7.2
American AirlinesOverall score based on 11054 reviews
7.5Boarding
8.0Crew
7.2Comfort
6.9Entertainment
6.5Food
Airline reviews

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

6.0 GoodAndres, Dec 2025
PDX - DFW
Read more American Airlines reviews

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

A little late at the start but all worked out well.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

After arriving in Dallas, the aircraft taxied for an unusually long time and was unable to park at the gate, which caused a significant delay and made me miss my connecting flight. I then had to wait in a very long line to be rebooked, and I was told that no hotel or meal accommodations would be provided. What is even more unacceptable is that my luggage was mishandled and has still not been located. My suitcase contains important medications that I urgently need, and I have been unable to access them due to the airline’s mishandling. This situation has caused me considerable stress and inconvenience, and I need this issue to be resolved immediately.

I appreciated that it was on time, safe and professional. I didn’t like that I wasn’t in a place where I had a window at my window seat. It would have been nice to know that in advance. If it was mentioned in the ticketing, I didn’t notice it.

I have a gluten allergy so didn't have any food

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Delayed delayed delayed and no offer for food or vouchers

Everything you need to know for your flight from San Francisco to Harlingen

Information on your arrival and departure airports

San Francisco (SFO)
Harlingen (HRL)