STL - HRL

$165 Find Cheap Flights from St. Louis to Harlingen - Compare and Save

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Everything you should know

Cheapest round-trip
$285
Typical prices: $340-$422
Delta
Sat 1/27Sat 2/3
STL - HRL • 1 stop
Cheapest one-way
$165
Typical prices: $183-$319
Southwest
Tue 12/11
STL - HRL • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Harlingen. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 34% price drop
February
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Houston George Bush Intcntl (IAH)
Cheapest • Avg $354 (round-trip)
Houston Hobby (HOU)
Shortest trip • 4h 54m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Harlingen (STL-HRL)

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

Recent round-trip flight deals from St. Louis to Harlingen

Sat, Jan 30 - Sat, Feb 6
United Airlines Logo
10:07 am - 3:34 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
5h 27m1 stop Houston George Bush Intcntl
United Airlines Logo
7:18 am - 2:05 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
6h 47m1 stop Houston George Bush Intcntl
$285United Airlines
Sat, Jan 23 - Sat, Jan 30
United Airlines Logo
6:15 am - 1:24 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 09m1 stop Houston George Bush Intcntl
United Airlines Logo
5:16 pm - 10:13 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
4h 57m1 stop Houston George Bush Intcntl
$285United Airlines
Wed, Jan 27 - Wed, Feb 3
Delta Logo
10:30 am - 4:16 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
5h 46m1 stop Minneapolis St Paul
Delta Logo
5:05 pm - 11:18 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
6h 13m1 stop Minneapolis St Paul
$285Delta
Sat, Jan 30 - Sat, Feb 6
United Airlines Logo
10:07 am - 3:34 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
5h 27m1 stop Houston George Bush Intcntl
United Airlines Logo
5:05 am - 2:28 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
9h 23m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$290United Airlines
Sat, Jan 23 - Sat, Jan 30
Southwest Logo
8:50 am - 6:25 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
9h 35m2 stops Dallas Love Field Austin Bergstrom
Southwest Logo
12:05 pm - 7:50 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
7h 45m2 stops Dallas Love Field Houston Hobby
$295Southwest
Sat, Oct 24 - Fri, Oct 30
American Airlines Logo
5:40 am - 10:08 amSTL  Lambert-St Louis-HRL Harlingen Valley Intl
4h 28m1 stop Dallas/Fort Worth
American Airlines Logo
6:42 pm - 11:42 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
5h 00m1 stop Dallas/Fort Worth
$307American Airlines
Fri, Jan 1 - Wed, Jan 6
American Airlines Logo
5:00 am - 9:59 amSTL  Lambert-St Louis-HRL Harlingen Valley Intl
4h 59m1 stop Dallas/Fort Worth
American Airlines Logo
10:35 am - 2:55 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
4h 20m1 stop Dallas/Fort Worth
$307American Airlines
Sat, Oct 24 - Fri, Oct 30
Southwest Logo
5:20 am - 12:00 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
6h 40m1 stop Houston Hobby
Southwest Logo
12:55 pm - 7:00 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
6h 05m1 stop Houston Hobby
$307Southwest
Sat, Oct 24 - Fri, Oct 30
American Airlines Logo
5:40 am - 10:08 amSTL  Lambert-St Louis-HRL Harlingen Valley Intl
4h 28m1 stop Dallas/Fort Worth
American Airlines Logo
6:42 pm - 11:42 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
5h 00m1 stop Dallas/Fort Worth
$317American Airlines
Sat, Jan 30 - Sat, Feb 6
Southwest Logo
9:00 am - 6:25 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
9h 25m2 stops Nashville Intl Austin Bergstrom
Southwest Logo
7:30 am - 3:35 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
8h 05m2 stops Austin Bergstrom Dallas Love Field
$327Southwest
Booking Insights

Price, demand and travel trends for St. Louis to Harlingen flights

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

How much is a round-trip flight from St. Louis to Harlingen?

Round-trip flights from St. Louis to Harlingen typically range from $340 to $422. The lowest price found in the past 5 days was $285, on Delta.

What's the cheapest day of the week to fly from St. Louis to Harlingen?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Harlingen. It’s 29% cheaper than the average day, while Sunday is the most expensive, with prices 4% higher.

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Key details for St. Louis to Harlingen flights

Low season

September

Cheapest flight

$165
The most popular month to fly with an average 179% increase in travelers.
One-way flight from St. Louis to Harlingen

When to book flights from St. Louis to Harlingen

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

Your St. Louis to Harlingen flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Harlingen?

    Only Economy Class is available on flights from St. Louis to Harlingen.

  • How long is a flight from St. Louis to Harlingen?

    A nonstop flight from St. Louis to Harlingen takes 00m, covering 962 miles.

  • Do I need a passport to fly from St. Louis to Harlingen?

    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.

  • How much should I expect to pay for a St. Louis to Harlingen flight?

    Round-trip flights from St. Louis to Harlingen range from $340 to $422, with an average of $390 over the past 12 months. Anything below $340 counts as a good deal.

  • Have flight prices from St. Louis to Harlingen 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 $285 to $604. That means the highest observed fare was about 2x higher than the lowest one.

  • How are flight prices from St. Louis to Harlingen looking right now?

    One-way fares from St. Louis to Harlingen are currently lower than usual. Average one-way flight prices are about $190, which is 25% below the typical average for this route.

  • What car rental options are available at Harlingen Valley Intl Airport (HRL)?

    Harlingen Valley Intl Airport (HRL) hosts 5 major car rental companies, with daily rates starting from around $30 for economy cars. Top options include:

    • Dollar
    • Budget
    • Hertz
    • Enterprise Rent-A-Car
    • Avis

  • Which airports can I use when flying from St. Louis to Harlingen?

    Flights from St. Louis to Harlingen usually depart from Lambert-St Louis (STL) and arrive at Harlingen Valley Intl (HRL).

  • Which airports do connecting flights from St. Louis to Harlingen pass through?

    One-stop flights from St. Louis to Harlingen most commonly connect through:

    • Dallas/Fort Worth (DFW) - 50% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 29% of one-stop connections
    • Houston Hobby (HOU) - 21% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Harlingen?

    Yes. Flexible dates can save you up to 32% on flights from St. Louis to Harlingen. Tuesday is the cheapest departure day at $279 round-trip on average, while Sunday is the most expensive at $407, a difference of $128.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Houston Hobby (HOU) gives the shortest average 1-stop total travel time at 4h 54m, compared with 4h 56m via Dallas/Fort Worth (DFW) and 5h 20m via Houston George Bush Intcntl (IAH).

Your guide to booking St. Louis to Harlingen flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $279, about $128 less than Sunday fares (31% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Harlingen trip for January. Fares historically average $256 round-trip in that month - typically $243 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from St. Louis to Harlingen

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

Car rentals in Harlingen
Hotels in Harlingen