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Union

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Union Flights as Low as $79

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

Frontier Airlines
Wed, May 7 - Sat, May 10
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$79 Roundtrip, found 6 days ago
$79
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, May 7 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 10, priced at $79 found 6 days ago
Frontier Airlines
Sat, May 10 - Sat, May 10
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$79 Roundtrip, found 6 days ago
$79
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, May 10 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 10, priced at $79 found 6 days ago
Frontier Airlines
Fri, May 9 - Sat, May 10
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$124 Roundtrip, found 6 days ago
$124
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 10, priced at $124 found 6 days ago
Frontier Airlines
Sat, May 17 - Sat, May 24
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$175 Roundtrip, found 3 hours ago
$175
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, May 17 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sat, May 24, priced at $175 found 3 hours ago
Southern Airways Express
Thu, May 15 - Sun, May 25
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$178 Roundtrip, found 3 hours ago
$178
Roundtrip
found 3 hours ago
Select Southern Airways Express flight, departing Thu, May 15 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, May 25, priced at $178 found 3 hours ago
Frontier Airlines
Thu, May 1 - Wed, May 14
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$188 Roundtrip, found 6 days ago
$188
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, May 1 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Wed, May 14, priced at $188 found 6 days ago
Frontier Airlines
Wed, May 14 - Fri, May 16
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$190 Roundtrip, found 10 hours ago
$190
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Wed, May 14 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Fri, May 16, priced at $190 found 10 hours ago
Delta
Sun, May 25 - Wed, May 28
LEX
Blue Grass
STL
Lambert-St. Louis Intl.
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, May 25 from Blue Grass to Lambert-St. Louis Intl., returning Wed, May 28, priced at $202 found 1 day ago
United
Sun, May 25 - Wed, May 28
LEX
Blue Grass
STL
Lambert-St. Louis Intl.
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select United flight, departing Sun, May 25 from Blue Grass to Lambert-St. Louis Intl., returning Wed, May 28, priced at $202 found 1 day ago
American Airlines
Fri, May 30 - Mon, Jun 9
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$208 Roundtrip, found 18 hours ago
$208
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Fri, May 30 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Mon, Jun 9, priced at $208 found 18 hours ago
Delta
Sat, May 24 - Tue, May 27
LEX
Blue Grass
STL
Lambert-St. Louis Intl.
$214 Roundtrip, found 17 hours ago
$214
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, May 24 from Blue Grass to Lambert-St. Louis Intl., returning Tue, May 27, priced at $214 found 17 hours ago
Frontier Airlines
Thu, May 1 - Sat, May 10
PHX
Sky Harbor Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, May 1 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sat, May 10, priced at $217 found 2 days ago
United
Tue, Aug 12 - Wed, Aug 13
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Wed, Aug 13, priced at $221 found 1 day ago
Delta
Wed, Jun 18 - Wed, Jun 18
DAL
Love Field
STL
Lambert-St. Louis Intl.
$280 Roundtrip, found 10 hours ago
$280
Roundtrip
found 10 hours ago
Select Delta flight, departing Wed, Jun 18 from Love Field to Lambert-St. Louis Intl., returning Wed, Jun 18, priced at $280 found 10 hours ago
Alaska Airlines
Sat, May 24 - Wed, May 28
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$441 Roundtrip, found 1 day ago
$441
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, May 24 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Wed, May 28, priced at $441 found 1 day ago
Hawaiian Airlines
Sat, May 3 - Sun, May 11
PHX
Sky Harbor Intl.
STL
Lambert-St. Louis Intl.
$714 Roundtrip, found 2 days ago
$714
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, May 3 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, May 11, priced at $714 found 2 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 May, 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 $79, 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 $79 right now, why wait?

Union Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$78

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 May 7 to May 8
$88
includes taxes & fees
May 7 - May 8
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 ...
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 May 5 to May 6
$118
includes taxes & fees
May 5 - May 6
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! (1,483 reviews)
"Hotel staff was courteous and the rooms were clean but the mattresses were way too soft. When you sit or lay on them, you would sink in. Was not good for our backs."

Reviewed on Apr 28, 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 $175 per night from May 1 to May 2
$175
includes taxes & fees
May 1 - May 2
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)
"Such a cute and unique hotel. Amazing views to the whole pool/family area."

Reviewed on Apr 26, 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 $117 per night from May 14 to May 15
$117
includes taxes & fees
May 14 - May 15
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! (788 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 $150 per night from May 15 to May 16
$150
includes taxes & fees
May 15 - May 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)
"Nice, clean, family owned hotel, looked newly remodeled. Really great place."

Reviewed on Apr 29, 2025

Pinemark Inn & Suites
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 $89 per night from May 1 to May 2
$89
includes taxes & fees
May 1 - May 2
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 (1,002 reviews)
"Room was clean, great customer service and very comfortable beds."

Reviewed on Apr 14, 2025

Super 8 by Wyndham Eureka/Six Flags Nearby
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 May 6 to May 7
$147
includes taxes & fees
May 6 - May 7
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! (546 reviews)
"Very clean! Extremely kind staff and breakfast was yummy!"

Reviewed on Apr 19, 2025

Best Western Plus Washington Hotel
Baymont by Wyndham Sullivan
Baymont by Wyndham Sullivan
2.5 out of 5
275 North Service Road West, Sullivan, MO
The price is $101 per night from May 27 to May 28
$101
includes taxes & fees
May 27 - May 28
Book a stay at this business-friendly hotel in Sullivan. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
7.8/10 Good! (1,001 reviews)
"A good basic place to stay. Everything was good, place looked brand-new. Bed was somewhat firm, but perfectly fine for the low price."

Reviewed on Apr 22, 2025

Baymont by Wyndham Sullivan
See all 338 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.