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Union

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Union Flights as Low as $87

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

Spirit Airlines
Sun, Jun 15 - Sun, Jun 22
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$87 Roundtrip, found 5 days ago
$87
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Sun, Jun 15 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Jun 22, priced at $87 found 5 days ago
Frontier Airlines
Sat, May 3 - Tue, May 6
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$113 Roundtrip, found 4 days ago
$113
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, May 3 from Orlando Intl. to Lambert-St. Louis Intl., returning Tue, May 6, priced at $113 found 4 days ago
Delta
Sat, Jun 14 - Sun, Jun 15
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$120 Roundtrip, found 5 days ago
$120
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jun 14 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $120 found 5 days ago
Spirit Airlines
Tue, Apr 29 - Thu, May 8
RIC
Richmond Intl.
STL
Lambert-St. Louis Intl.
$166 Roundtrip, found 6 days ago
$166
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Tue, Apr 29 from Richmond Intl. to Lambert-St. Louis Intl., returning Thu, May 8, priced at $166 found 6 days ago
Delta
Wed, May 14 - Wed, May 14
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$185 Roundtrip, found 4 days ago
$185
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, May 14 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Wed, May 14, priced at $185 found 4 days ago
Frontier Airlines
Wed, Apr 16 - Wed, Apr 23
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$190 Roundtrip, found 15 hours ago
$190
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Apr 16 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Wed, Apr 23, priced at $190 found 15 hours ago
Frontier Airlines
Wed, Apr 23 - Tue, Apr 29
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$191 Roundtrip, found 20 hours ago
$191
Roundtrip
found 20 hours ago
Select Frontier Airlines flight, departing Wed, Apr 23 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Tue, Apr 29, priced at $191 found 20 hours ago
Frontier Airlines
Thu, May 1 - Wed, May 7
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 1 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Wed, May 7, priced at $198 found 1 day ago
American Airlines
Tue, Jun 17 - Wed, Jun 18
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Jun 17 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Wed, Jun 18, priced at $199 found 1 day ago
Frontier Airlines
Mon, May 5 - Sat, May 17
SMF
Sacramento Intl.
STL
Lambert-St. Louis Intl.
$201 Roundtrip, found 22 hours ago
$201
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Mon, May 5 from Sacramento Intl. to Lambert-St. Louis Intl., returning Sat, May 17, priced at $201 found 22 hours ago
American Airlines
Wed, Jul 16 - Wed, Jul 23
BOS
Logan Intl.
STL
Lambert-St. Louis Intl.
$203 Roundtrip, found 5 days ago
$203
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jul 16 from Logan Intl. to Lambert-St. Louis Intl., returning Wed, Jul 23, priced at $203 found 5 days ago
Delta
Mon, Jul 14 - Sun, Jul 20
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$213 Roundtrip, found 1 day ago
$213
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jul 14 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Sun, Jul 20, priced at $213 found 1 day ago
United
Tue, Jun 17 - Wed, Jun 18
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 17 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Wed, Jun 18, priced at $237 found 1 day ago
Hawaiian Airlines
Wed, May 7 - Fri, May 16
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, May 7 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, May 16, priced at $259 found 4 days ago
Alaska Airlines
Sun, May 11 - Fri, May 16
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$279 Roundtrip, found 4 days ago
$279
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sun, May 11 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, May 16, priced at $279 found 4 days ago
Alaska Airlines
Sat, May 10 - Thu, May 15
PAE
Seattle Paine Field Intl. Airport
STL
Lambert-St. Louis Intl.
$590 Roundtrip, found 4 days ago
$590
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 10 from Seattle Paine Field Intl. Airport to Lambert-St. Louis Intl., returning Thu, May 15, priced at $590 found 4 days ago

Cheap Flights to Union

Fall in love at first flight with your vacation to Union by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Union on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Union, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Union

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Union with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the STL airport.

What is the cheapest month to fly to Union?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Union are in June, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Union?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 16 to choose from for your flight to Union.

What airport is best to fly into Union?

When you’re planning your trip to Union, convenience is the name of the game. Luckily, Union Spirit of St. Louis Airport is nearby so you can deplane and get going on checking off everything on your Union must-do list.

How much are flights to Union?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Union on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $87, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Union?

The trick to saving a stack of cash on your flight to Union? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $87 right now, why wait?

Union Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$87

Last Minute Hotel Deals in Union

Super 8 by Wyndham Union
Super 8 by Wyndham Union
2 out of 5
1015 East Main Street, I44 Exit 247 Hwy 50, Union, MO
The price is $88 per night from Apr 20 to Apr 21
$88
includes taxes & fees
Apr 20 - Apr 21
Book a stay at this business-friendly hotel in Union. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms ...
8/10 Very Good! (580 reviews)
Good Rest
"Very clean and comfortable! Excellent mattress to rest!"

Reviewed on Apr 7, 2025

Super 8 by Wyndham Union
The Wildwood Hotel
The Wildwood Hotel
3.5 out of 5
2801 Fountain Pl, Wildwood, MO
The price is $118 per night from Apr 15 to Apr 16
$118
includes taxes & fees
Apr 15 - Apr 16
Stay at this 3.5-star business-friendly hotel in Wildwood. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the convenient ...
9/10 Wonderful! (1,487 reviews)
"Very high end and amazing staff"

Reviewed on Apr 13, 2025

The Wildwood Hotel
Holiday Inn St. Louis West Six Flags by IHG
Holiday Inn St. Louis West Six Flags by IHG
3 out of 5
4901 Six Flags Rd, Eureka, MO
The price is $162 per night from Apr 17 to Apr 18
$162
includes taxes & fees
Apr 17 - Apr 18
Stay at this 3-star family-friendly hotel in Eureka. Enjoy free WiFi, free parking, and breakfast (surcharge). Our guests praise the pool and the restaurant ...
8.6/10 Excellent! (1,000 reviews)
"Had a wonderful weekend getaway and loved the pool area."

Reviewed on Apr 11, 2025

Holiday Inn St. Louis West Six Flags by IHG
Comfort Inn Near Six Flags St. Louis
Comfort Inn Near Six Flags St. Louis
2.5 out of 5
1320 Thornton St, Pacific, MO
The price is $129 per night from Apr 16 to Apr 17
$129
includes taxes & fees
Apr 16 - Apr 17
Book a stay at this business-friendly hotel in Pacific. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
8.2/10 Very Good! (787 reviews)
"It was nice, clean, and quiet. Will stay again."

Reviewed on Apr 3, 2025

Comfort Inn Near Six Flags St. Louis
Pinemark Inn & Suites
Pinemark Inn & Suites
2 out of 5
866 South Outer Road, St. Clair, MO
The price is $153 per night from Apr 15 to Apr 16
$153
includes taxes & fees
Apr 15 - Apr 16
Stay at this hotel in St. Clair. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the pool in our reviews. Popular attractions ...
9.4/10 Exceptional! (1,002 reviews)
"We’ve stayed here at least 4 times when we visit St Louis, it’s about 45 minutes to St Louis from here but it’s so nice and quiet and the rooms are beautiful and the property is pristine it’s hard to go anywhere else, if you’re just traveling through definitely stay, you’ll get a great bed and room ..."

Reviewed on Apr 13, 2025

Pinemark Inn & Suites
Quality Inn Near Six Flags St. Louis
Quality Inn Near Six Flags St. Louis
2.5 out of 5
1400 W Osage St, Pacific, MO
The price is $113 per night from Apr 15 to Apr 16
$113
includes taxes & fees
Apr 15 - Apr 16
Book a stay at this business-friendly hotel in Pacific. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
8.4/10 Very Good! (305 reviews)
"M"

Reviewed on Apr 10, 2025

Quality Inn Near Six Flags St. Louis
Best Western Plus Washington Hotel
Best Western Plus Washington Hotel
2.5 out of 5
2621 E 5th St, Washington, MO
The price is $147 per night from Apr 21 to Apr 22
$147
includes taxes & fees
Apr 21 - Apr 22
Book a stay at this business-friendly hotel in Washington. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
9/10 Wonderful! (540 reviews)
"Good breakfast service. Sloppy painting."

Reviewed on Apr 7, 2025

Best Western Plus Washington Hotel
Super 8 by Wyndham Eureka/Six Flags Nearby
Super 8 by Wyndham Eureka/Six Flags Nearby
2 out of 5
1733 W 5th St, Eureka, MO
The price is $83 per night from Apr 15 to Apr 16
$83
includes taxes & fees
Apr 15 - Apr 16
Stay at this hotel in Eureka. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
6.8/10 (1,001 reviews)
"The place was really nice and clean. I was surprised how comfortable the beds were and I loved the water pressure in the shower. Id stay there again, it doesnt look like much from the outside but it has everything you need for a comfortable night."

Reviewed on Apr 8, 2025

Super 8 by Wyndham Eureka/Six Flags Nearby
See all 339 properties in Union
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.