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Union

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Union Flights as Low as $115

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

Frontier Airlines
Sat, Feb 22 - Mon, Feb 24
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$115 Roundtrip, found 4 days ago
$115
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Feb 22 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Mon, Feb 24, priced at $115 found 4 days ago
Frontier Airlines
Wed, Feb 19 - Mon, Feb 24
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$116 Roundtrip, found 3 days ago
$116
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Feb 19 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Feb 24, priced at $116 found 3 days ago
Frontier Airlines
Tue, Feb 25 - Tue, Mar 4
BDL
Bradley Intl.
STL
Lambert-St. Louis Intl.
$120 Roundtrip, found 1 day ago
$120
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Feb 25 from Bradley Intl. to Lambert-St. Louis Intl., returning Tue, Mar 4, priced at $120 found 1 day ago
Frontier Airlines
Tue, Apr 29 - Tue, May 6
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$120 Roundtrip, found 2 days ago
$120
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Apr 29 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Tue, May 6, priced at $120 found 2 days ago
Frontier Airlines
Fri, Feb 21 - Wed, Feb 26
BOS
Logan Intl.
STL
Lambert-St. Louis Intl.
$131 Roundtrip, found 4 days ago
$131
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Fri, Feb 21 from Logan Intl. to Lambert-St. Louis Intl., returning Wed, Feb 26, priced at $131 found 4 days ago
Spirit Airlines
Mon, Mar 10 - Thu, Mar 27
BDL
Bradley Intl.
STL
Lambert-St. Louis Intl.
$140 Roundtrip, found 5 days ago
$140
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Mon, Mar 10 from Bradley Intl. to Lambert-St. Louis Intl., returning Thu, Mar 27, priced at $140 found 5 days ago
Frontier Airlines
Thu, Mar 27 - Mon, Mar 31
SMF
Sacramento Intl.
STL
Lambert-St. Louis Intl.
$151 Roundtrip, found 6 days ago
$151
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Mar 27 from Sacramento Intl. to Lambert-St. Louis Intl., returning Mon, Mar 31, priced at $151 found 6 days ago
United
Tue, Feb 18 - Wed, Feb 19
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$179 Roundtrip, found 6 days ago
$179
Roundtrip
found 6 days ago
Select United flight, departing Tue, Feb 18 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Wed, Feb 19, priced at $179 found 6 days ago
Delta
Wed, Mar 19 - Mon, Mar 24
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$197 Roundtrip, just found
$197
Roundtrip
just found
Select Delta flight, departing Wed, Mar 19 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, Mar 24, priced at $197 just found
American Airlines
Wed, Mar 26 - Sat, Mar 29
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Mar 26 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Sat, Mar 29, priced at $217 found 2 days ago
Frontier Airlines
Wed, May 14 - Sat, May 24
ELP
El Paso Intl.
STL
Lambert-St. Louis Intl.
$220 Roundtrip, found 18 hours ago
$220
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Wed, May 14 from El Paso Intl. to Lambert-St. Louis Intl., returning Sat, May 24, priced at $220 found 18 hours ago
Alaska Airlines
Tue, Mar 25 - Wed, Mar 26
SMF
Sacramento Intl.
STL
Lambert-St. Louis Intl.
$246 Roundtrip, found 6 days ago
$246
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Mar 25 from Sacramento Intl. to Lambert-St. Louis Intl., returning Wed, Mar 26, priced at $246 found 6 days ago
Delta
Wed, Jul 23 - Sat, Jul 26
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$299 Roundtrip, found 15 hours ago
$299
Roundtrip
found 15 hours ago
Select Delta flight, departing Wed, Jul 23 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sat, Jul 26, priced at $299 found 15 hours ago
Spirit Airlines
Tue, Mar 18 - Sat, Mar 22
CLT
Charlotte-Douglas Intl.
STL
Lambert-St. Louis Intl.
$309 Roundtrip, found 22 hours ago
$309
Roundtrip
found 22 hours ago
Select Spirit Airlines flight, departing Tue, Mar 18 from Charlotte-Douglas Intl. to Lambert-St. Louis Intl., returning Sat, Mar 22, priced at $309 found 22 hours ago
Hawaiian Airlines
Tue, Mar 25 - Thu, Mar 27
SMF
Sacramento Intl.
STL
Lambert-St. Louis Intl.
$462 Roundtrip, found 6 days ago
$462
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Tue, Mar 25 from Sacramento Intl. to Lambert-St. Louis Intl., returning Thu, Mar 27, priced at $462 found 6 days ago
American Airlines
Sat, Feb 15 - Tue, Feb 18
CHS
Charleston Intl.
STL
Lambert-St. Louis Intl.
$636 Roundtrip, found 1 day ago
$636
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Feb 15 from Charleston Intl. to Lambert-St. Louis Intl., returning Tue, Feb 18, priced at $636 found 1 day 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 February, 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 $115, 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 $115 right now, why wait?

Union Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$115

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 $87 per night from Feb 17 to Feb 18
$87
includes taxes & fees
Feb 17 - Feb 18
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! (568 reviews)
great
"Clean place, convenient location, attentive staff"

Reviewed on Feb 5, 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 Feb 12 to Feb 13
$118
includes taxes & fees
Feb 12 - Feb 13
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! (1,455 reviews)
"The area was safe it was right across the street from a police station and there were different restaurants nearby"

Reviewed on Feb 9, 2025

The Wildwood Hotel
Holiday Inn St. Louis West Six Flags, an IHG Hotel
Holiday Inn St. Louis West Six Flags, an IHG Hotel
3 out of 5
4901 Six Flags Rd, Eureka, MO
The price is $141 per night from Feb 13 to Feb 14
$141
includes taxes & fees
Feb 13 - Feb 14
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! (1,003 reviews)
"Loved the pool area and the bartender was great!!"

Reviewed on Feb 8, 2025

Holiday Inn St. Louis West Six Flags, an IHG Hotel
Pinemark Inn & Suites
Pinemark Inn & Suites
2 out of 5
866 South Outer Road, St. Clair, MO
The price is $131 per night from Feb 12 to Feb 13
$131
includes taxes & fees
Feb 12 - Feb 13
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! (1,001 reviews)
"The people at the front desk were super nice and the place was cozy!"

Reviewed on Jan 31, 2025

Pinemark Inn & Suites
Comfort Inn Sullivan
Comfort Inn Sullivan
2.5 out of 5
736 S Service Rd W, Sullivan, MO
The price is $112 per night from Feb 23 to Feb 24
$112
includes taxes & fees
Feb 23 - Feb 24
Book a stay at this business-friendly hotel in Sullivan. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. ...
8.6/10 Excellent! (704 reviews)
"Lots of parking"

Reviewed on Jan 30, 2025

Comfort Inn Sullivan
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 $122 per night from Mar 5 to Mar 6
$122
includes taxes & fees
Mar 5 - Mar 6
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! (768 reviews)
"Easy in and out. Breakfast was standard fare but good. Floors were clean which was really nice. Plenty of towels in bathroom and pillows on bed which I really appreciated. The outlets near bed weren’t operable so that was a bit of a hassle."

Reviewed on Feb 2, 2025

Comfort Inn Near Six Flags St. Louis
Baymont by Wyndham Sullivan
Baymont by Wyndham Sullivan
2.5 out of 5
275 North Service Road West, Sullivan, MO
The price is $88 per night from Feb 23 to Feb 24
$88
includes taxes & fees
Feb 23 - Feb 24
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! (1,000 reviews)
"The bed popped alot at night because of the metal platform other than that great night stay."

Reviewed on Jan 24, 2025

Baymont by Wyndham Sullivan
Super 8 by Wyndham Washington
Super 8 by Wyndham Washington
2 out of 5
2081 Eckelkamp Ct, I-44, Exit 251 (Hwy. 100), Washington, MO
The price is $94 per night from Feb 27 to Feb 28
$94
includes taxes & fees
Feb 27 - Feb 28
Book a stay at this business-friendly hotel in Washington. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
8.2/10 Very Good! (611 reviews)
"Wish there was an elevator"

Reviewed on Feb 8, 2025

Super 8 by Wyndham Washington
See all 326 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.