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Union

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Union Flights as Low as $60

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

Spirit Airlines
Sun, Aug 17 - Sun, Aug 17
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$60 Roundtrip, found 3 hours ago
$60
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Sun, Aug 17 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $60 found 3 hours ago
Spirit Airlines
Thu, Aug 14 - Sun, Aug 17
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$70 Roundtrip, just found
$70
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Aug 14 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $70 just found
Spirit Airlines
Fri, Aug 8 - Sun, Aug 10
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$73 Roundtrip, found 7 hours ago
$73
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Fri, Aug 8 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $73 found 7 hours ago
United
Tue, Sep 9 - Mon, Sep 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$77 Roundtrip, just found
$77
Roundtrip
just found
Select United flight, departing Tue, Sep 9 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Sep 15, priced at $77 just found
Spirit Airlines
Thu, Aug 14 - Thu, Aug 21
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$81 Roundtrip, found 10 hours ago
$81
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Thu, Aug 14 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $81 found 10 hours ago
Frontier Airlines
Thu, Oct 2 - Fri, Oct 10
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, found 2 hours ago
$84
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Oct 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Oct 10, priced at $84 found 2 hours ago
American Airlines
Tue, Sep 9 - Mon, Sep 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$91 Roundtrip, just found
$91
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 9 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Sep 15, priced at $91 just found
Spirit Airlines
Thu, Dec 11 - Sat, Dec 13
FLL
Fort Lauderdale - Hollywood Intl.
STL
Lambert-St. Louis Intl.
$108 Roundtrip, found 15 hours ago
$108
Roundtrip
found 15 hours ago
Select Spirit Airlines flight, departing Thu, Dec 11 from Fort Lauderdale - Hollywood Intl. to Lambert-St. Louis Intl., returning Sat, Dec 13, priced at $108 found 15 hours ago
Frontier Airlines
Tue, Sep 30 - Sat, Oct 4
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$112 Roundtrip, just found
$112
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Sep 30 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 4, priced at $112 just found
Frontier Airlines
Thu, Aug 21 - Sun, Aug 31
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Aug 21 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Sun, Aug 31, priced at $119 just found
Delta
Sun, Oct 19 - Mon, Oct 20
DTW
Detroit Metropolitan Wayne County
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 3 hours ago
$119
Roundtrip
found 3 hours ago
Select Delta flight, departing Sun, Oct 19 from Detroit Metropolitan Wayne County to Lambert-St. Louis Intl., returning Mon, Oct 20, priced at $119 found 3 hours ago
Spirit Airlines
Thu, Aug 14 - Fri, Aug 15
BOS
Logan Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Aug 14 from Logan Intl. to Lambert-St. Louis Intl., returning Fri, Aug 15, priced at $137 just found
Spirit Airlines
Mon, Aug 18 - Thu, Aug 21
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Mon, Aug 18 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $179 found 1 day ago
Southern Airways Express
Tue, Sep 9 - Mon, Sep 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$187 Roundtrip, just found
$187
Roundtrip
just found
Select Southern Airways Express flight, departing Tue, Sep 9 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Sep 15, priced at $187 just found
Delta
Tue, Aug 26 - Tue, Aug 26
DAL
Love Field
STL
Lambert-St. Louis Intl.
$192 Roundtrip, just found
$192
Roundtrip
just found
Select Delta flight, departing Tue, Aug 26 from Love Field to Lambert-St. Louis Intl., returning Tue, Aug 26, priced at $192 just found
Bargain Flight
Tue, Nov 18 - Wed, Nov 19
SAT
San Antonio Intl.
STL
Lambert-St. Louis Intl.
$215 Roundtrip, found 5 hours ago
$215
Roundtrip
found 5 hours ago
Select Bargain Flight flight, departing Tue, Nov 18 from San Antonio Intl. to Lambert-St. Louis Intl., returning Wed, Nov 19, priced at $215 found 5 hours 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 August, 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 15 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 $60, 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 $60 right now, why wait?

Union Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$60

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
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! (601 reviews)
"Staff was nice,rooms were clean,and hotel was clean"

Reviewed on Jul 18, 2025

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Super 8 by Wyndham Union
The Wildwood Hotel

The Wildwood Hotel

3.5 out of 5
2801 Fountain Pl, Wildwood, MO
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! (1,552 reviews)
"Quiet and peaceful"

Reviewed on Jul 19, 2025

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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
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 ...
8.8/10 Excellent! (1,000 reviews)
"Convenient for six flags ….. shuttle was easy to get to and from park… Indoor pool was nice for kids"

Reviewed on Jul 14, 2025

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Holiday Inn St. Louis West Six Flags by IHG
Baymont by Wyndham Sullivan

Baymont by Wyndham Sullivan

2.5 out of 5
275 North Service Road West, Sullivan, MO
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 ...
7.6/10 Good! (1,005 reviews)
"Loved this was the first property we have stayed at (including Drury & Marriott’s) where the indoor pool was WARM! Even Drury and Marriott were cold. Baymont’s pool and hot tub were very nice. Property well kept. Clean. Huge TV in King Standard Room (55”) and bed was comfortable. A little creaky, ..."

Reviewed on Jul 13, 2025

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Baymont by Wyndham Sullivan
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
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)
"It was close to six flags"

Reviewed on Jul 17, 2025

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Super 8 by Wyndham Eureka/Six Flags Nearby
Super 8 by Wyndham St. Clair MO

Super 8 by Wyndham St. Clair MO

2 out of 5
1010 S Outer Rd, St. Clair, MO
Stay at this hotel in St. Clair. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. Popular attractions Indian ...
7/10 Good! (870 reviews)
"I usually rank higher but I wasn't impressed with the outside trash overflowing and not changed for a couple days. The refrigerator freezer needed defrosted, it was almost completely unusable."

Reviewed on Jul 12, 2025

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Super 8 by Wyndham St. Clair MO
Comfort Inn Near Six Flags St. Louis

Comfort Inn Near Six Flags St. Louis

2.5 out of 5
1320 Thornton St, Pacific, MO
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! (829 reviews)
"Perfect stay!"

Reviewed on Jul 12, 2025

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Comfort Inn Near Six Flags St. Louis
Pinemark Inn & Suites

Pinemark Inn & Suites

2 out of 5
866 South Outer Road, St. Clair, MO
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)
Barry C
"The staff (Ezekiel at the front desk) were friendly and very helpful. Rooms quiet, clean and with plenty of room to get comfortable in."

Reviewed on Jul 18, 2025

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Pinemark Inn & Suites
See all 348 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.