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Saint Louis → Buenos Aires

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STL → EZE1 adulteconomy

9 flight options · 3 airlines

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

United Airlines
3:00 pmSTL
15h 20m
IAH · 3h 5m
9:20 am+1EZE
United Airlines
10:05 pmEZE
14h 40m
IAH · 2h 20m
9:45 am+1STL

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

American Airlines
12:58 pmSTL
16h 22m
DFW · 3h 55m
8:20 am+1EZE
American Airlines
11:59 pmEZE
14h 37m
MIA · 2h
11:36 am+1STL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
5:31 pmSTL
13h 9m
ATL · 1h 28m
9:40 am+1EZE
Delta Air Lines
11:35 pmEZE
14h 13m
ATL · 2h 1m
10:48 am+1STL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
3:00 pmSTL
15h 20m
IAH · 3h 5m
9:20 am+1EZE
United Airlines
10:05 pmEZE
14h 40m
IAH · 2h 20m
9:45 am+1STL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

American Airlines
12:58 pmSTL
16h 22m
DFW · 3h 55m
8:20 am+1EZE
American Airlines
11:59 pmEZE
14h 37m
MIA · 2h
11:36 am+1STL

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
5:31 pmSTL
13h 9m
ATL · 1h 28m
9:40 am+1EZE
Delta Air Lines
11:35 pmEZE
14h 13m
ATL · 2h 1m
10:48 am+1STL

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

United Airlines
3:00 pmSTL
15h 20m
IAH · 3h 5m
9:20 am+1EZE

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

American Airlines
12:58 pmSTL
16h 22m
DFW · 3h 55m
8:20 am+1EZE

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
5:31 pmSTL
13h 9m
ATL · 1h 28m
9:40 am+1EZE

One-way total · 1 adult · Taxes included

Make this trip yours

STL ⇄ EZE

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Why book with Axel
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  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
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Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

Nov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-20 · one wayUnited AirlinesUA6265 + UA819$730.002026-10-29T01:28:29Z
2026-11-20 · one wayAmerican AirlinesAA5082 + AA997$740.002026-10-29T01:28:29Z
2026-11-20 · one wayDelta Air LinesDL543 + DL101$770.002026-10-29T01:28:29Z
2026-11-20 → 2026-11-23United AirlinesUA6265 + UA819 / UA818 + UA6214$1229.602026-10-29T01:28:29Z
2026-11-20 → 2026-11-23American AirlinesAA5082 + AA997 / AA908 + AA3686$1250.802026-10-29T01:28:29Z
2026-11-27 → 2026-12-04Delta Air LinesDL543 + DL101 / DL278 + DL1400$1293.202026-10-29T01:28:29Z
2026-11-27 → 2026-12-04United AirlinesUA6265 + UA819 / UA818 + UA6214$1229.602026-10-29T01:28:29Z
2026-11-27 → 2026-12-04American AirlinesAA5082 + AA997 / AA908 + AA3686$1250.802026-10-29T01:28:29Z
2026-11-20 → 2026-11-23Delta Air LinesDL543 + DL101 / DL278 + DL1400$1293.202026-10-29T01:28:29Z

2026-11-20 · one way · $730.00

  • United Airlines UA6265 / UA819: STL 2026-11-20 15:00:00 → EZE 2026-11-21 09:20:00; 1 stop(s) via IAH; 920 minutes. Local airport times.
    • UA6265: STL 2026-11-20 15:00:00 → IAH 2026-11-20 17:25:00; layover at IAH: 185 minutes.
    • UA819: IAH 2026-11-20 20:30:00 → EZE 2026-11-21 09:20:00.

2026-11-20 · one way · $740.00

  • American Airlines AA5082 / AA997: STL 2026-11-20 12:58:00 → EZE 2026-11-21 08:20:00; 1 stop(s) via DFW; 982 minutes. Local airport times.
    • AA5082: STL 2026-11-20 12:58:00 → DFW 2026-11-20 15:05:00; layover at DFW: 235 minutes.
    • AA997: DFW 2026-11-20 19:00:00 → EZE 2026-11-21 08:20:00.

2026-11-20 · one way · $770.00

  • Delta Air Lines DL543 / DL101: STL 2026-11-20 17:31:00 → EZE 2026-11-21 09:40:00; 1 stop(s) via ATL; 789 minutes. Local airport times.
    • DL543: STL 2026-11-20 17:31:00 → ATL 2026-11-20 20:12:00; layover at ATL: 88 minutes.
    • DL101: ATL 2026-11-20 21:40:00 → EZE 2026-11-21 09:40:00.

2026-11-20 → 2026-11-23 · $1229.60

  • United Airlines UA6265 / UA819: STL 2026-11-20 15:00:00 → EZE 2026-11-21 09:20:00; 1 stop(s) via IAH; 920 minutes. Local airport times.
    • UA6265: STL 2026-11-20 15:00:00 → IAH 2026-11-20 17:25:00; layover at IAH: 185 minutes.
    • UA819: IAH 2026-11-20 20:30:00 → EZE 2026-11-21 09:20:00.
  • United Airlines UA818 / UA6214: EZE 2026-11-23 22:05:00 → STL 2026-11-24 09:45:00; 1 stop(s) via IAH; 880 minutes. Local airport times.
    • UA818: EZE 2026-11-23 22:05:00 → IAH 2026-11-24 05:20:00; layover at IAH: 140 minutes.
    • UA6214: IAH 2026-11-24 07:40:00 → STL 2026-11-24 09:45:00.

2026-11-20 → 2026-11-23 · $1250.80

  • American Airlines AA5082 / AA997: STL 2026-11-20 12:58:00 → EZE 2026-11-21 08:20:00; 1 stop(s) via DFW; 982 minutes. Local airport times.
    • AA5082: STL 2026-11-20 12:58:00 → DFW 2026-11-20 15:05:00; layover at DFW: 235 minutes.
    • AA997: DFW 2026-11-20 19:00:00 → EZE 2026-11-21 08:20:00.
  • American Airlines AA908 / AA3686: EZE 2026-11-23 23:59:00 → STL 2026-11-24 11:36:00; 1 stop(s) via MIA; 877 minutes. Local airport times.
    • AA908: EZE 2026-11-23 23:59:00 → MIA 2026-11-24 07:19:00; layover at MIA: 120 minutes.
    • AA3686: MIA 2026-11-24 09:19:00 → STL 2026-11-24 11:36:00.

2026-11-27 → 2026-12-04 · $1293.20

  • Delta Air Lines DL543 / DL101: STL 2026-11-27 17:31:00 → EZE 2026-11-28 09:40:00; 1 stop(s) via ATL; 789 minutes. Local airport times.
    • DL543: STL 2026-11-27 17:31:00 → ATL 2026-11-27 20:12:00; layover at ATL: 88 minutes.
    • DL101: ATL 2026-11-27 21:40:00 → EZE 2026-11-28 09:40:00.
  • Delta Air Lines DL278 / DL1400: EZE 2026-12-04 23:35:00 → STL 2026-12-05 10:48:00; 1 stop(s) via ATL; 853 minutes. Local airport times.
    • DL278: EZE 2026-12-04 23:35:00 → ATL 2026-12-05 07:59:00; layover at ATL: 121 minutes.
    • DL1400: ATL 2026-12-05 10:00:00 → STL 2026-12-05 10:48:00.

2026-11-27 → 2026-12-04 · $1229.60

  • United Airlines UA6265 / UA819: STL 2026-11-27 15:00:00 → EZE 2026-11-28 09:20:00; 1 stop(s) via IAH; 920 minutes. Local airport times.
    • UA6265: STL 2026-11-27 15:00:00 → IAH 2026-11-27 17:25:00; layover at IAH: 185 minutes.
    • UA819: IAH 2026-11-27 20:30:00 → EZE 2026-11-28 09:20:00.
  • United Airlines UA818 / UA6214: EZE 2026-12-04 22:05:00 → STL 2026-12-05 09:45:00; 1 stop(s) via IAH; 880 minutes. Local airport times.
    • UA818: EZE 2026-12-04 22:05:00 → IAH 2026-12-05 05:20:00; layover at IAH: 140 minutes.
    • UA6214: IAH 2026-12-05 07:40:00 → STL 2026-12-05 09:45:00.

2026-11-27 → 2026-12-04 · $1250.80

  • American Airlines AA5082 / AA997: STL 2026-11-27 12:58:00 → EZE 2026-11-28 08:20:00; 1 stop(s) via DFW; 982 minutes. Local airport times.
    • AA5082: STL 2026-11-27 12:58:00 → DFW 2026-11-27 15:05:00; layover at DFW: 235 minutes.
    • AA997: DFW 2026-11-27 19:00:00 → EZE 2026-11-28 08:20:00.
  • American Airlines AA908 / AA3686: EZE 2026-12-04 23:59:00 → STL 2026-12-05 11:36:00; 1 stop(s) via MIA; 877 minutes. Local airport times.
    • AA908: EZE 2026-12-04 23:59:00 → MIA 2026-12-05 07:19:00; layover at MIA: 120 minutes.
    • AA3686: MIA 2026-12-05 09:19:00 → STL 2026-12-05 11:36:00.

2026-11-20 → 2026-11-23 · $1293.20

  • Delta Air Lines DL543 / DL101: STL 2026-11-20 17:31:00 → EZE 2026-11-21 09:40:00; 1 stop(s) via ATL; 789 minutes. Local airport times.
    • DL543: STL 2026-11-20 17:31:00 → ATL 2026-11-20 20:12:00; layover at ATL: 88 minutes.
    • DL101: ATL 2026-11-20 21:40:00 → EZE 2026-11-21 09:40:00.
  • Delta Air Lines DL278 / DL1400: EZE 2026-11-23 23:35:00 → STL 2026-11-24 10:48:00; 1 stop(s) via ATL; 853 minutes. Local airport times.
    • DL278: EZE 2026-11-23 23:35:00 → ATL 2026-11-24 07:59:00; layover at ATL: 121 minutes.
    • DL1400: ATL 2026-11-24 10:00:00 → STL 2026-11-24 10:48:00.

More dates for this route