St Louis to New York STL → EWR, LGA
Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR), LaGuardia Airport (LGA)
The cheapest return found recently is $312 with Frontier Airlines, 10 Dec – 13 Dec, found 2 days ago. The cheapest one-way found recently is $140 with Frontier Airlines, 23 Dec, found 4 days ago.
Return
The cheapest return fare on each of 8 departure dates is usually $292 to $323.
Cheapest return found recently
$312
10 Dec – 13 Dec · Frontier Airlines
Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA)
Leaves 6:20 p.m. · Return leaves 11:43 a.m. · 39 h 7 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
$345
21 Dec – 15 Jan 2027 · Southwest Airlines
Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA)
Leaves 5:25 a.m. · Return leaves 5:40 p.m. · 5 h 15 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$312 10 Dec – 13 Decfound 2 days agoSee prices for these dates
$270 19 Dec – 15 Jan 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $145 to $360.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 8 departure dates from 24 Oct to 22 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 10 Dec to compare.
Every date we hold
18 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct – 26 Oct | $374 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 10 Dec – 13 Dec | $312 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 12 Dec – 15 Jan 2027 | $294 | American Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 18 Dec – 12 Jan 2027 | $285 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 19 Dec – 15 Jan 2027 | $270 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 20 Dec – 14 Jan 2027 | $297 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 21 Dec – 15 Jan 2027 | $345 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 22 Dec – 14 Jan 2027 | $315 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $270.
Airlines on the cheapest dates: Southwest Airlines, Frontier Airlines, American Airlines.
One-way
The cheapest one-way fare on each of 8 departure dates is usually $141 to $158.
Cheapest one-way found recently
$140
23 Dec · Frontier Airlines
Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR)
Leaves 6:21 p.m. · 29 h 51 min trip
1 stop
found 4 days ago
Cheapest nonstop one-way
$152
14 Jan 2027 · Southwest Airlines
Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA)
Leaves 12:00 p.m. · 2 h 15 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$140 23 Decfound 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 23 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $125 to $205.
23 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 8 departure dates from 24 Oct to 16 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold one-way fares on 1 other departure date within 3 days of 23 Dec, and it is not cheaper.
Every date we hold
11 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct | $177 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR) | 1 stop | found 5 days ago | Open this trip |
| 18 Dec | $143 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR) | 1 stop | found 5 days ago | Open this trip |
| 19 Dec | $141 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | nonstop | found 5 days ago | Open this trip |
| 20 Dec | $180 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | nonstop | found 4 days ago | Open this trip |
| 23 Dec | $140 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Newark Liberty International Airport (EWR) | 1 stop | found 4 days ago | Open this trip |
| 14 Jan 2027 | $152 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | nonstop | found 4 days ago | Open this trip |
| 15 Jan 2027 | $141 | Southwest Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | nonstop | found 5 days ago | Open this trip |
| 16 Jan 2027 | $145 | American Airlines | Lambert-St. Louis International Airport (STL) → LaGuardia Airport (LGA) | nonstop | found 6 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $140.
Airlines on the cheapest dates: Southwest Airlines, Frontier Airlines, American Airlines.
Premium cabin fares from St Louis to New York
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 10 Dec – 13 Dec in another cabin: Premium economy · Business · First
Today's prices for 23 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for St Louis to New York?
Return
Fares 14 to 29 days before departure were typically 34% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $390 | $272 | +51% | 12 |
| 7–13 days | $444 | $374 | +72% | 13 |
| 14–29 days | $258 | $145 | Cheapest seen | 12 |
| 30–59 days | $356 | $294 | +38% | 21 |
| 60–89 days | $264 | $166 | +2% | 25 |
| 90–179 days | $475 | $475 | +84% | 8 |
One-way
Fares 60 to 89 days before departure were typically 28% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (23 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $177 | $166 | +38% | 15 |
| 7–13 days | $177 | $166 | +38% | 15 |
| 30–59 days | $192 | $192 | +50% | 8 |
| 60–89 days | $128 | $125 | Cheapest seen | 13 |
| 90–179 days | $141 | $128 | +10% | 13 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
St Louis → Philadelphia
130 km from New York
$138
$2 less than flying to New York
14 Nov · STL → PHL · nonstop
found 6 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 10 Dec – 13 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work