STL - HRL

$307 Find Cheap Flights from St. Louis to Harlingen - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$307
Typical prices: $340-$422
American Airlines
Sat 10/20Mon 10/22
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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We hope you love your trip to Harlingen!
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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

Tue, Oct 20 - Thu, Oct 22
American Airlines Logo
12:47 pm - 6:12 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
5h 25m1 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
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
Sat, Oct 24 - Fri, Oct 30
American Airlines Logo
3:20 pm - 10:50 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 30m1 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
Sat, Oct 24 - Fri, Oct 30
American Airlines Logo
3:20 pm - 10:50 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 30m1 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
$322American Airlines
Fri, Oct 23 - Mon, Oct 26
United Airlines Logo
3:12 pm - 9:52 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
6h 40m1 stop Houston George Bush Intcntl
United Airlines Logo
5:25 pm - 10:26 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
5h 01m1 stop Houston George Bush Intcntl
$327United Airlines
Tue, Sep 15 - Sun, Sep 20
United Airlines Logo
11:15 am - 3:59 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
4h 44m1 stop Houston George Bush Intcntl
United Airlines Logo
5:05 am - 10:10 amHRL  Harlingen Valley Intl-STL Lambert-St Louis
5h 05m1 stop Houston George Bush Intcntl
$327United Airlines
Fri, Jan 1 - Fri, Jan 8
United Airlines Logo
6:15 am - 1:30 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
5:16 pm - 10:06 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
4h 50m1 stop Houston George Bush Intcntl
$329United Airlines
Fri, Oct 23 - Mon, Oct 26
Southwest Logo
5:10 am - 12:15 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 05m2 stops Dallas Love Field Houston Hobby
Southwest Logo
6:35 pm - 10:25 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
3h 50m1 stop Houston Hobby
$332Southwest
Fri, Oct 23 - Mon, Oct 26
Southwest Logo
5:10 am - 12:15 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
7h 05m2 stops Dallas Love Field Houston Hobby
Southwest Logo
6:35 pm - 12:35 amHRL  Harlingen Valley Intl-STL Lambert-St Louis
6h 00m2 stops Houston Hobby Dallas Love Field
$377Southwest
Tue, Sep 15 - Sun, Sep 20
Southwest Logo
7:05 am - 1:00 pmSTL  Lambert-St Louis-HRL Harlingen Valley Intl
5h 55m2 stops Dallas Love Field Houston Hobby
Southwest Logo
6:50 am - 8:00 pmHRL  Harlingen Valley Intl-STL Lambert-St Louis
13h 10m2 stops Austin Bergstrom Pensacola
$397Southwest
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 from St. Louis to Harlingen with more confidence.

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

Round-trip flights from St. Louis to Harlingen start at $307. Prices are below average for this route right now, with typical round-trip fares ranging from $340 to $422. The lowest price found in the past 5 days was $307 on American Airlines.

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

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

Find deals

Key details for St. Louis to Harlingen flights

Low season

September

Cheapest flight

$307
Most popular time to fly with an average 4% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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.

  • 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

    Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 32% on the St. Louis to Harlingen route. 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 long is a flight from St. Louis to Harlingen?

    A nonstop flight from St. Louis to Harlingen takes 0h 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.

  • 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 $307 to $948. That means the highest observed fare was about 3x higher than the lowest one.

  • 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).

  • 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

  • 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.

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 can be flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average $279 - about $128 less than Sunday (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).

Everything you need to know for your flight from St. Louis to Harlingen

Information on your arrival and departure airports

St. Louis (STL)
Harlingen (HRL)