Cheap flights To Union (STL) from $40

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Cheap Flights to Union from $40 One Way, $80 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Thu, May 15 - Sat, May 17
FLL
Fort Lauderdale - Hollywood Intl.
STL
Lambert-St. Louis Intl.
$80 Roundtrip, found 6 days ago
$80
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Thu, May 15 from Fort Lauderdale - Hollywood Intl. to Lambert-St. Louis Intl., returning Sat, May 17, priced at $80 found 6 days ago
Tue, May 6 - Wed, May 14
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$83 Roundtrip, found 6 days ago
$83
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, May 6 from Orlando Intl. to Lambert-St. Louis Intl., returning Wed, May 14, priced at $83 found 6 days ago
Fri, Jul 11 - Sun, Jul 13
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$100 Roundtrip, found 2 hours ago
$100
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Fri, Jul 11 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Jul 13, priced at $100 found 2 hours ago
Thu, May 15 - Sat, May 17
FLL
Fort Lauderdale - Hollywood Intl.
STL
Lambert-St. Louis Intl.
$100 Roundtrip, found 6 days ago
$100
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Thu, May 15 from Fort Lauderdale - Hollywood Intl. to Lambert-St. Louis Intl., returning Sat, May 17, priced at $100 found 6 days ago
Sat, May 17 - Sun, May 18
FLL
Fort Lauderdale - Hollywood Intl.
STL
Lambert-St. Louis Intl.
$101 Roundtrip, found 5 days ago
$101
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Sat, May 17 from Fort Lauderdale - Hollywood Intl. to Lambert-St. Louis Intl., returning Sun, May 18, priced at $101 found 5 days ago
Sat, Jun 14 - Sat, Jun 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$104 Roundtrip, found 15 hours ago
$104
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Sat, Jun 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Jun 14, priced at $104 found 15 hours ago
Sat, May 3 - Sat, May 10
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$115 Roundtrip, found 6 days ago
$115
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, May 3 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 10, priced at $115 found 6 days ago
Sun, Jul 27 - Sun, Jul 27
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$143 Roundtrip, found 6 days ago
$143
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Jul 27 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Sun, Jul 27, priced at $143 found 6 days ago
Tue, May 20 - Sun, May 25
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$168 Roundtrip, found 2 days ago
$168
Roundtrip
found 2 days ago
Select Southern Airways Express flight, departing Tue, May 20 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, May 25, priced at $168 found 2 days ago
Thu, Jul 17 - Mon, Jul 21
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$171 Roundtrip, found 6 days ago
$171
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Jul 17 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Mon, Jul 21, priced at $171 found 6 days ago

Union Flight Information

Traveling To
Union
Destination Airport IATA Code
STL
Number of Airlines Serving
Airlines
Spirit Airlines, Frontier Airlines, United, Southern Airways Express, American Airlines
Flight Price
$80
Earliest Departing Flight
Latest Departing Flight

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Union economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

Jun 5 - Jun 7

2 night stay

Newark Liberty Intl. Airport (EWR) to St. Louis (STL)

United • Roundtrip • Coach
per person
found 1 day ago
HoteLumiere at the Arch
4.0-star property

HoteLumiere at the Arch

Jun 5 - Jun 8

3 night stay

Los Angeles (LAX) to St. Louis (STL)

United • Non-stop • Coach

St. Louis (STL) to Los Angeles (LAX)

Spirit Airlines • Non-stop • Coach
per person
found 3 hours ago
White House at Grand Central
4.0-star property

White House at Grand Central

Jun 13 - Jun 16

3 night stay

New York (NYC) to St. Louis (STL)

Southwest Airlines • Roundtrip • Coach
per person
found 18 hours ago
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Union premium economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

9/10 Wonderful! (1,464 reviews)

Jun 6 - Jun 8

2 night stay

Los Angeles (LAX) to St. Louis (STL)

Delta • Non-stop roundtrip • PremiumEconomy
per person
found 4 hours ago
The staff at this property were incredible. Everyone we talked to was friendly and helpful. I even left something of value behind and they had it shipped to me and I am ever so grateful. The room and the amenities were great and the hotel is in an area that feels safe and has a walking path nearby and also shopping and dining. We would definitely stay here again.

Reviewed on Apr 21, 2025

Ballpark Heights Apartments By Barsala
4.0-star property

Ballpark Heights Apartments By Barsala

No reviews

Jun 6 - Jun 8

2 night stay

Los Angeles (LAX) to St. Louis (STL)

Delta • Non-stop roundtrip • PremiumEconomy
per person
found 4 hours ago
Ameristar Casino Resort and Spa
4.5-star property

Ameristar Casino Resort and Spa

8.4/10 Very Good! (1,004 reviews)

Jun 6 - Jun 8

2 night stay

Los Angeles (LAX) to St. Louis (STL)

Delta • Non-stop roundtrip • PremiumEconomy
per person
found 4 hours ago
All was good. Except for the smoking casino

Reviewed on Apr 19, 2025

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Union

If you are looking for discount prices on flights to Union then look no further than Orbitz. With some of the best deals available, cutting-edge technology, and great customer service, Orbitz makes booking Union flights easy and affordable.

Booking Made Easy

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Manage Travel Plans on the Move

By using Orbitz’s free apps for iPhone and Android, and an easy-to-use mobile browser at m.orbitz.com, booking flights to Union has never been so convenient. Check for updates and alerts wherever you are, or manage your booking quickly. And we also offer mobile exclusive deals on hotels, so don’t delay—book right away.

The Complete Package

Orbitz makes it stress-free to book Union flights, and we can also help you figure out the rest of your trip just as easily. If you need great deals on hotels and car rentals following your flights to Union, just add the details to your booking and search for the cheapest deals out there. And why waste time lining up for admission to attractions and events? With Orbitz, you can book tickets in advance and waltz straight in.

Low Price Guarantee

Booking your Union flights with Orbitz guarantees low prices every day, all day—no matter when and where you book. You will always find the best deals available, coupled with extra great savings and discounts for all around great value.

Frequently asked questions

Which airlines fly to Union?
With 20 airlines to pick from, finding the ideal flight that suits your travel dates and budget will be a breeze. Lambert-St. Louis Intl. Airport (STL) is a major gateway to Union and where you’ll likely be touching down. These well-known international airlines are ready to take you there:

  • Air Canada - 35 flights to Union per month
  • Frontier Airlines - 17 flights to Union per month
  • Lufthansa - 3 flights to Union per month

How much is a flight to Union?
If you’re hunting down a return flight, fares ranged from $80 to $171 this week. The most affordable prices for one-way tickets were $40, originating from Fort Lauderdale (FLL).
How to book the cheapest flight to Union?
Scoring cheap flights to Union is as easy as booking your ticket with Orbitz. But if you’d love to make sure you’re nabbing the best flight deals around, here are a few tips your budget will love:

  • Consider departing from or arriving at nearby airports for a cheaper fare. Enter your preferred departure and arrival points in the form fields, then select the ‘Nearby airports’ function below. It will list the available options.
  • If your plans aren’t etched in stone, click on the ‘Show flexible dates’ link to see the flight deals across different departure dates. Go with any suitable cheaper fare that pops up.
  • Hit ‘Show options’ to fine tune your search results. You can pick your preferred seating class and airline here. Under ‘Sort & Filter’ to the left, you can even specify whether you’d like to fly in the morning, afternoon or evening.
  • Book your airfare as soon as you’ve decided on your travel dates. While it does happen now and then, airline tickets rarely get more affordable as your date of departure gets closer.
  • Consider combining your flights, hotels and car rentals into one convenient package deal to stretch your budget even further.
  • Don’t travel during the busy season if you can. By avoiding summer and school vacations, you can make amazing savings on your airfare.

What is the best time to book a flight to Union?
Snap up a bargain and book your seats to Union in January. If you’ve missed this month, fear not. February and August often have low airfares as well. Just make sure you don’t snooze on a sale — cheap flights come and go in the blink of an eye!
What day of the week is the cheapest to book a flight to Union?
Make a booking on a Tuesday, Wednesday or Saturday. Typically, these are the cheapest days of the week to purchase airfares to Union. The vacation of your dreams starts with a great flight deal!
What is the cheapest day of the week to fly to Union?
If you’re looking for cheap flights to Union, leave earlier in the week. Orbitz data from 2020 shows Monday is the cheapest day to jet off, followed by Tuesday. Saturday has the most expensive fares, so avoid this day and do your bank account a favor.
What is the cheapest month to fly to Union?
To book cheap flights to Union, you should pack your bags and take off in August. Orbitz data has found that this is generally the best month to save loads on your fare. If you want to jet to Union in June, be aware that this is the least affordable time of year to take a trip.
Which airlines allow free cancellation?
When searching for flights on Orbitz, click on “Filter by flexible change policies.” This filter will show you all the airlines offering free cancellation and no change fees. Relax knowing that if things change, your flight can too.
What do I need for the flight to Union?
There’s nothing more enjoyable than flying off to a cool new destination, but it’s wise to be prepared. This list of useful tips will help get your journey started on the right foot:

  • Before you step foot on the plane, you’ll need to show proof of identification, such as a passport. You’ll also need your boarding pass. If you’re traveling with the kids, check with your airline about which documents they may need.
  • To keep you busy on your short trip to Union, download some new music or stock up the audiobook library on your tablet. Food can also be a welcome distraction while in the air, so maybe even bring some light snacks.
  • It can get very cool on the plane. If you don’t want to shiver your way through the flight, dress in layers.

How do I get cheap first-class/business deals to Union?
Smart travelers know how to find first or business-class airfares to Union without the steep price tag. You can do the same with these helpful tips:

  • Be more flexible with your travel dates and hold out for deals on first or business-class airfares.
  • A lot of low-cost airlines nowadays offer superb business or premium-class seating without the pricey fees.
  • Make a bid for an upgrade. Some carriers hold online auctions that let you put down a price for a seat up the front. You may also be able to upgrade with points earned through a loyalty program.

What is the best time to go to Union?
If you want to immerse yourself in the culture of Union in the busy season, April, May and June are the prime months to visit. June 20 signals the start of summertime in the Northern Hemisphere and is a fantastic time to travel if you delight in the open air. During this time of year, average daily temperatures typically range from 65 ºF to 90 ºF.

Nearby

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.