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Cheap flights from St. Louis to Buffalo (STL - BUF) from $97

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — BUF
Apr 29 — May 61
From?
To?
Mon 4/29
Mon 5/6
1 adult, Economy
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The best prices from Lambert-St Louis to Buffalo are usually found in September or January, booked 73 days in advance, depart on a Wednesday or Sunday and return on a Sunday

Cheap flight deals from St. Louis to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2024.

Popular in

November

Cheapest in

September

Round-trip from

$256

One-way from

$128
High demand for flights, 18% potential price rise
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Best time to find cheap flights, 22% potential price drop
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From Lambert-St Louis to Buffalo
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One-way flight from Lambert-St Louis to Buffalo
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What is the cheapest day to fly round-trip from St. Louis to Buffalo?

Flights from St. Louis to Buffalo are found to be more expensive on Monday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Buffalo.

How far in advance should I book a flight from St. Louis to Buffalo?

Travelers have found it’s best to book a flight 34 days in advance to save up to 69% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 34 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Buffalo 1-2 weeks in advance for as low as $409, or $409 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Buffalo?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, September can be a great choice for travel to Buffalo. Flights to Buffalo from St. Louis in September are about $405 on average during September, but can be found for as low as $169.

When is the cheapest time to fly from St. Louis to Buffalo (STL - BUF)?

It’s optimal to fly from St. Louis to Buffalo at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

Cheap Frontier flights from St. Louis to Buffalo

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Buffalo. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Find some of the cheapest Frontier flights traveling from St. Louis to Buffalo. Come back soon if you're not finding the exact deal you're looking for.
Thu 5/97:16 pmSTL - BUF
1 stop11h 30mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/22$123
Thu 5/1611:06 pmSTL - BUF
1 stop18h 01mFrontier
Mon 5/208:46 amBUF - STL
1 stop12h 40mFrontier
Deal found 4/24$136
Fri 5/107:16 pmSTL - BUF
1 stop23h 22mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/23$178
Sat 6/812:03 pmSTL - BUF
1 stop7h 14mFrontier
Sat 6/159:07 pmBUF - STL
1 stop11h 01mFrontier
Deal found 4/24$200
Fri 6/77:44 pmSTL - BUF
1 stop23h 33mFrontier
Sun 6/167:54 pmBUF - STL
1 stop22h 22mFrontier
Deal found 4/24$210
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Thu 5/308:23 pmBUF - STL
1 stop11h 45mFrontier
Deal found 4/23$230
Fri 5/178:45 pmSTL - BUF
1 stop20h 22mFrontier
Sun 5/198:25 pmBUF - STL
1 stop25h 01mFrontier
Deal found 4/24$240
Sat 6/1512:03 pmSTL - BUF
1 stop7h 14mFrontier
Wed 6/195:52 pmBUF - STL
1 stop21h 40mFrontier
Deal found 4/23$248
Sun 6/233:37 pmSTL - BUF
1 stop24h 15mFrontier
Sun 6/307:54 pmBUF - STL
1 stop25h 26mFrontier
Deal found 4/23$260

Cheap Delta flights from St. Louis to Buffalo

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Buffalo. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Some of the lowest-priced Delta flights we've found at this time heading from St. Louis to Buffalo. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Sat 10/55:30 pmSTL - BUF
1 stop5h 26mDelta
Fri 10/111:30 pmBUF - STL
1 stop5h 25mDelta
Deal found 4/23$266
Wed 6/52:59 pmSTL - BUF
1 stop7h 16mDelta
Fri 6/76:15 amBUF - STL
1 stop4h 00mDelta
Deal found 4/24$276
Mon 7/155:25 pmSTL - BUF
1 stop5h 34mDelta
Thu 7/186:10 amBUF - STL
1 stop4h 13mDelta
Deal found 4/24$296
Tue 4/303:40 pmSTL - BUF
1 stop6h 24mDelta
Wed 5/16:00 amBUF - STL
1 stop5h 58mDelta
Deal found 4/23$412
Tue 4/306:10 pmSTL - BUF
1 stop4h 46mDelta
Wed 5/16:10 amBUF - STL
1 stop7h 07mDelta
Deal found 4/22$460
Fri 10/1112:00 pmSTL - BUF
1 stop5h 40mDelta
Tue 10/151:30 pmBUF - STL
1 stop8h 20mDelta
Deal found 4/24$471
Mon 7/155:25 pmSTL - BUF
1 stop5h 34mDelta
Thu 7/1812:04 pmBUF - STL
2 stops10h 32mDelta
Deal found 4/23$818
Fri 10/116:00 pmSTL - BUF
1 stop4h 56mDelta
Tue 10/1510:45 amBUF - STL
2 stops7h 42mDelta
Deal found 4/24$1,167
Sun 6/163:23 pmSTL - BUF
2 stops7h 36mDelta
Wed 6/192:45 pmBUF - STL
2 stops6h 52mDelta
Deal found 4/23$1,224

Cheap St. Louis to Buffalo flights in April & May 2024

Find cheap flight options from St. Louis to Buffalo specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,073,952 searches. Prices were last updated on April 24, 2024.
Check out some of the best flight deals from St. Louis to Buffalo in 2024. More deals are always being added, so be sure to check back regularly.
Thu 5/97:16 pmSTL - BUF
1 stop11h 30mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/22$123
Thu 5/1611:06 pmSTL - BUF
1 stop18h 01mFrontier
Mon 5/208:46 amBUF - STL
1 stop12h 40mFrontier
Deal found 4/24$136
Fri 5/107:16 pmSTL - BUF
1 stop23h 22mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/23$178
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Thu 5/308:23 pmBUF - STL
1 stop11h 45mFrontier
Deal found 4/23$230
Fri 4/267:16 pmSTL - BUF
1 stop23h 22mFrontier
Mon 4/297:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/23$277
Sat 5/114:20 pmSTL - BUF
1 stop7h 12mAmerican Airlines
Sun 5/126:00 amBUF - STL
1 stop4h 53mAmerican Airlines
Deal found 4/23$340
Wed 5/11:10 pmSTL - BUF
1 stop9h 27mAmerican Airlines
Thu 5/26:08 amBUF - STL
1 stop10h 23mAmerican Airlines
Deal found 4/23$389
Tue 4/303:40 pmSTL - BUF
1 stop6h 24mDelta
Wed 5/16:00 amBUF - STL
1 stop5h 58mDelta
Deal found 4/23$412
Tue 5/215:35 pmSTL - BUF
1 stop4h 48mUnited Airlines
Tue 5/282:04 pmBUF - STL
1 stop26h 37mUnited Airlines
Deal found 4/22$455

St. Louis to Buffalo 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Buffalo in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Check out some of the best flight deals from St. Louis to Buffalo in 2024. More deals are always being added, so be sure to check back regularly.
Thu 5/97:16 pmSTL - BUF
1 stop11h 30mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/22$123
Thu 5/1611:06 pmSTL - BUF
1 stop18h 01mFrontier
Mon 5/208:46 amBUF - STL
1 stop12h 40mFrontier
Deal found 4/24$136
Fri 5/107:16 pmSTL - BUF
1 stop23h 22mFrontier
Mon 5/137:02 pmBUF - STL
1 stop21h 48mFrontier
Deal found 4/23$178
Tue 6/186:00 amSTL - BUF
1 stop8h 46mAmerican Airlines
Tue 6/256:46 pmBUF - STL
1 stop6h 17mAmerican Airlines
Deal found 4/23$212
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Thu 5/308:23 pmBUF - STL
1 stop11h 45mFrontier
Deal found 4/23$230
Sun 6/166:30 amSTL - BUF
1 stop4h 34mMultiple Airlines
Wed 6/195:52 pmBUF - STL
1 stop21h 40mMultiple Airlines
Deal found 4/23$231
Tue 6/186:00 amSTL - BUF
1 stop8h 46mAmerican Airlines
Fri 6/216:46 pmBUF - STL
1 stop6h 17mAmerican Airlines
Deal found 4/23$237
Wed 6/126:00 amSTL - BUF
1 stop8h 46mAmerican Airlines
Sun 6/1612:38 pmBUF - STL
1 stop4h 28mAmerican Airlines
Deal found 4/23$239
Wed 6/510:36 pmSTL - BUF
1 stop9h 50mFrontier
Fri 6/75:52 pmBUF - STL
1 stop16h 38mFrontier
Deal found 4/22$240

St. Louis to Buffalo flights leaving soon

Find last-minute flight options from St. Louis to Buffalo for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Check out these flights departing soon from St. Louis to Buffalo. To prevent any unwanted surprises, users should verify their flight info before booking.
Wed 5/11:10 pmSTL - BUF
1 stop9h 27mAmerican Airlines
Thu 5/26:08 amBUF - STL
1 stop10h 23mAmerican Airlines
Deal found 4/23$389
Tue 4/303:40 pmSTL - BUF
1 stop6h 24mDelta
Wed 5/16:00 amBUF - STL
1 stop5h 58mDelta
Deal found 4/23$412
Tue 4/306:10 pmSTL - BUF
1 stop4h 46mDelta
Wed 5/16:10 amBUF - STL
1 stop7h 07mDelta
Deal found 4/22$460
Tue 4/3011:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Wed 5/16:15 amBUF - STL
1 stop4h 44mUnited Airlines
Deal found 4/23$487
Tue 4/3011:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Wed 5/16:15 amBUF - STL
1 stop4h 44mUnited Airlines
Deal found 4/22$535
Wed 5/11:11 pmSTL - BUF
2 stops9h 26mAmerican Airlines
Thu 5/26:00 amBUF - STL
1 stop7h 30mAmerican Airlines
Deal found 4/23$558
Wed 5/17:10 amSTL - BUF
2 stops8h 00mAmerican Airlines
Thu 5/26:08 amBUF - STL
2 stops10h 35mAmerican Airlines
Deal found 4/23$563

One-way flights to Buffalo from St. Louis

Search for one-way flight options from St. Louis to Buffalo. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Buffalo. Those needing a return flight from St. Louis to Buffalo can use the search form above.
Tue 6/186:00 amSTL - BUF
1 stop8h 46mAmerican Airlines
Deal found 4/23$97
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 4/23$110
Thu 6/63:32 pmSTL - BUF
1 stop24h 20mFrontier
Deal found 4/23$112
Thu 6/273:32 pmSTL - BUF
1 stop24h 20mFrontier
Deal found 4/24$128
Thu 8/86:58 pmSTL - BUF
1 stop4h 01mAmerican Airlines
Deal found 4/23$137
Sun 7/286:08 amSTL - BUF
1 stop4h 49mAmerican Airlines
Deal found 4/23$148
Wed 7/3111:36 amSTL - BUF
2 stops23h 19mMultiple Airlines
Deal found 4/22$265
Sun 7/284:45 pmSTL - BUF
3 stops19h 15mMultiple Airlines
Deal found 4/23$272
Tue 6/186:00 amSTL - BUF
2 stops10h 37mAmerican Airlines
Deal found 4/23$283

Find flights from St. Louis to Buffalo within your budget

Customize your flight search to find flights from St. Louis to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$123 - $372

Route

Depart

Return

Price

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 5/9

1 stop11h 30m

Buffalo

Mon 5/13

1 stop21h 48m

$123

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 5/16

1 stop18h 01m

Buffalo

Mon 5/20

1 stop12h 40m

$136

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 5/10

1 stop23h 22m

Buffalo

Mon 5/13

1 stop21h 48m

$178

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 6/8

1 stop7h 14m

Buffalo

Sat 6/15

1 stop11h 01m

$200

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 6/18

1 stop8h 46m

Buffalo

Tue 6/25

1 stop6h 17m

$212

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sun 6/16

1 stop4h 34m

Buffalo

Wed 6/19

1 stop21h 40m

$231

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 6/18

1 stop8h 46m

Buffalo

Fri 6/21

1 stop6h 17m

$237

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 10/5

1 stop5h 26m

Buffalo

Fri 10/11

1 stop5h 25m

$266

Lambert-St LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/3

1 stop5h 28m

Buffalo

Wed 6/5

1 stop6h 36m

$372

Flights are sorted by cheapest first

Deals found on 4/22

When is the best time to book a flight from St. Louis to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Buffalo. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from St. Louis to Buffalo, you should look to book at least 73 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

When is the cheapest time to fly from St. Louis to Buffalo?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Buffalo. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Buffalo flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Buffalo by month

Plan your trip from St. Louis to Buffalo by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Buffalo is currently $172 while a round-trip flight costs $217. Price data was last updated on April 21, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Buffalo (average of $256). Flying from St. Louis to Buffalo in July is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$256

February

$266

March

$295

April

$282

May

$292

June

$332

July

$366

August

$298

September

$274

October

$261

November

$256

December

$277

Temperature and rainfall in Buffalo by month

Plan your trip to Buffalo by taking into account the average temperature and rainfall totals by month.

BUF

Temperature

24.8 - 71.6 °F

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buffalo. Reviews last updated April 24, 2024.
To help decide which airline to fly from St. Louis to Buffalo, see what other customers have to say about Frontier, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

On time flights; courteous staff; efficient boarding system! Thank you!

Delta
8.1
Very good
11,004 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

On time flights; courteous staff; efficient boarding system! Thank you!

United Airlines
7.4
Good
11,255 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

On time flights; courteous staff; efficient boarding system! Thank you!

American Airlines
7.3
Good
14,898 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

On time flights; courteous staff; efficient boarding system! Thank you!

Frontier
6.3
Okay
4,139 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

On time flights; courteous staff; efficient boarding system! Thank you!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Buffalo for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Buffalo for under $200. The cheapest flight booked recently is on Frontier for just $123, but on average you can expect to pay $241.

  • Are there last-minute flights available from St. Louis to Buffalo for under $400?

    There are currently 7+ open flights from St. Louis to Buffalo within the next 7 days for less than $400.

  • What are the cheapest airlines flying from St. Louis to Buffalo round-trip?

    According to our current data, Frontier ($123), American Airlines ($212), and Delta ($266) offers the cheapest pricing from St. Louis to Buffalo. Frontier is currently priced 69% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from St. Louis to Buffalo one-way?

    $97 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Frontier and United Airlines, with prices starting from $110 and $1,033, respectively.

  • What are the most popular airlines that fly from St. Louis to Buffalo?

    Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to Buffalo.

  • What does STL to BUF mean?

    STL and BUF are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to BUF refers to a flight route from Lambert-St Louis Airport to Buffalo Airport.

  • Can I find deals for flights from St. Louis to Buffalo that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Buffalo flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Buffalo with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Buffalo flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Buffalo that include hotel bookings?

    Yes. In addition to deals on St. Louis to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Buffalo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Buffalo.

  • Can I find deals for business class flights from St. Louis to Buffalo?

    Yes. Cheapflights offers flight deals from St. Louis to Buffalo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Buffalo that allow pets onboard?

    Many airlines flying from St. Louis to Buffalo offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Buffalo?

    Yes, you can often find last-minute deals on St. Louis to Buffalo flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Buffalo flight deals updated?

    The St. Louis to Buffalo flight deals you see on this page were last updated on 4/24.

See more FAQs

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Alternative routes for St. Louis to Buffalo
See prices for flight routes from nearby airports that may be better suited for you.

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Top 4 airlines flying from St. Louis to Buffalo

Discover the top 4 airlines that operate flights from St. Louis to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$246FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$172Average$470FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$265Average$381FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$283Average$375FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from St. Louis to Buffalo by cabin class

Find flights from St. Louis to Buffalo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Can Cheapflights notify me if prices for flights from St. Louis to Buffalo become cheaper?

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