United MileagePlus award flights from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)
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In the last 30 days AwardTool saw United MileagePlus award space for IAD→EZE in economy, premium economy and business class. Lowest economy: 38,000 miles + $5.60 (economy space on 78 dates). Lowest business class: 88,000 miles + $5.60 on a mixed-cabin itinerary (part of the trip in a lower cabin; business-class space on 71 dates).
Prices observed – ; newest observation .
Page regenerated from the Oct 19, 2026 data snapshot (normally daily). Summary last changed . Seats change quickly.
- Lowest economy
- 38,000 miles + $5.60
- economy space on 78 dates
- Lowest business class (mixed cabin)
- 88,000 miles + $5.60
- business-class space on 71 dates · part of the trip in a lower cabin
- Lowest premium economy
- 55,000 miles + $5.60
- premium economy space on 68 dates
MileagePlus award prices by cabin
The lowest one-way United MileagePlus award AwardTool observed on IAD→EZE in each cabin, in miles plus taxes.
| Cabin | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Economy | 38,000 miles + $5.60 | 1 stop | Air Canada (AC), Avianca (AV), COPA Airlines (CM), Ethiopian Airlines (ET) +2 more | 4 | 78 | See dates | |
| Premium Economy | 55,000 miles + $5.60 | 1 stop | Air Canada (AC), Ethiopian Airlines (ET), Turkish Airlines (TK), United Airlines (UA) | 9+ | 68 | See dates | |
| Business | 88,000 miles + $5.60Mixed cabin | 2 stops | Air Canada (AC), Avianca (AV), COPA Airlines (CM), Ethiopian Airlines (ET) +2 more | 2 | 71 | See dates |
Not seen means AwardTool hasn't observed this cabin on this route in the last 30 days. It doesn't mean the airline has no seats. Dates seen counts departure dates with an open award in that cabin at any price; newest observation is the latest time AwardTool saw one of them. Seats is the count the program reported when we observed it; some programs report at most 9.
Observed MileagePlus award examples
| Departure | Cabin | Points + taxes | Seats | Stops | Observed (UTC) | |
|---|---|---|---|---|---|---|
| Economy | 38,000 miles + $5.60 | 4 | 1 stop | Check this date | ||
| Economy | 40,800 miles + $5.60 | 2 | 1 stop | Check this date | ||
| Economy | 45,000 miles + $5.60 | 9+ | 1 stop | Check this date | ||
| Premium Economy | 60,500 miles + $5.60 | 3 | 1 stop | Check this date | ||
| Premium Economy | 60,500 miles + $5.60 | 3 | 2 stops | Check this date | ||
| Premium Economy | 60,500 miles + $5.60 | 6 | 2 stops | Check this date | ||
| Business | 88,000 miles + $5.60Mixed cabin | 2 | 2 stops | Check this date | ||
| Business | 88,000 miles + $5.60Mixed cabin | 2 | 2 stops | Check this date |
Prices are one-way per traveler: the program's points or miles plus taxes and carrier fees in USD, as AwardTool observed them in the observation window. Award space changes constantly. A seat we saw may be gone, and space we haven't seen may exist. Always confirm with a live search before transferring points; most transfers can't be reversed.
How often MileagePlus award space showed up
Departure dates in the next 365 days that AwardTool checked for United MileagePlus in the last 30 days, how many had award space in each cabin at any price, and the latest departure with space.
| Cabin | Dates with space | Share of dates checked | Latest departure with space |
|---|---|---|---|
| Economy | 78 of 78 | 100% | |
| Premium Economy | 68 of 78 | 87% | |
| Business | 71 of 78 | 91% |
Best months to fly from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE) with MileagePlus
| Month | Economy | Premium Economy | Business |
|---|---|---|---|
| 49,500 (2 dates) | 120,000 (1 date) | 88,000 (1 date)Mixed cabin | |
| 38,000 (20 dates) | 60,500 (11 dates) | 88,000 (14 dates)Mixed cabin | |
| 49,500 (6 dates) | 55,000 (6 dates) | 88,000 (6 dates)Mixed cabin | |
| 41,700 (8 dates) | 60,500 (8 dates) | 88,000 (8 dates)Mixed cabin | |
| 47,200 (13 dates) | 60,500 (13 dates) | 88,000 (13 dates)Mixed cabin | |
| 45,000 (7 dates) | 55,000 (7 dates) | 88,000 (7 dates)Mixed cabin | |
| 40,600 (9 dates) | 60,500 (9 dates) | 88,000 (9 dates)Mixed cabin | |
| 48,300 (4 dates) | 55,000 (4 dates) | 88,000 (4 dates)Mixed cabin | |
| 49,500 (7 dates) | 55,000 (7 dates) | 88,000 (7 dates)Mixed cabin | |
| 49,500 (2 dates) | 55,000 (2 dates) | 88,000 (2 dates)Mixed cabin |
How to get MileagePlus miles
- Bilt Rewards: 1:1 · Instant
- Chase Ultimate Rewards: 1:1 · Instant
Check current transfer bonuses. Most transfers can't be reversed.
MileagePlus vs other programs from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)
Lowest one-way award per program and cabin on this route.
| Program | Economy | Premium Economy | Business | First |
|---|---|---|---|---|
| Air Canada Aeroplan | 40,000 pts + $75.61 | 63,680 pts + $75.81 | 60,000 pts + $75.61Lowest | — |
| Air France/KLM Flying Blue | 28,000 pts + $59.75 | 73,180 pts + $38.00 | 145,000 pts + $723.20 | — |
| Alaska Atmos Rewards | 30,000 pts + $25.60 | 40,000 pts + $25.60 | — | 60,000 pts + $31.20Lowest |
| American Airlines AAdvantage | 22,000 pts + $5.60Lowest | 33,000 pts + $5.60Lowest | 82,500 pts + $5.60 | 268,000 pts + $11.20 |
| Avianca LifeMiles | 25,540 pts + $34.00 | — | 60,270 pts + $30.25 | — |
| Delta SkyMiles | 24,200 pts + $5.60 | 88,200 pts + $5.60 | 267,000 pts + $5.60Mixed cabin | 230,000 pts + $5.60 |
| Etihad Guest | 67,000 pts + $38.00 | — | 87,000 pts + $38.00Mixed cabin | — |
| GOL Smiles | 76,800 pts + taxes not reported | 278,500 pts + taxes not reported | 206,200 pts + taxes not reportedMixed cabin | — |
| Qantas Frequent Flyer | 36,200 pts + $29.00 | 132,900 pts + $184.80 | 98,400 pts + $29.00 | — |
| United MileagePlus | 38,000 pts + $5.60 | 55,000 pts + $5.60 | 88,000 pts + $5.60Mixed cabin | — |
| Virgin Atlantic Flying Club | 29,000 pts + $428.80 | 58,000 pts + $605.50 | 136,000 pts + $1,122.90 | — |
Questions about MileagePlus award flights from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)
How many miles do you need to fly from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE) with United MileagePlus?
The lowest one-way United MileagePlus awards AwardTool observed in the last 30 days (newest observation Oct 18, 2026): economy 38,000 miles + $5.60, with a typical monthly low of 47,200 miles over 10 months and award space on 78 departure dates; premium economy 55,000 miles + $5.60, with a typical monthly low of 55,000 miles over 10 months and award space on 68 departure dates; business class 88,000 miles + $5.60, a mixed-cabin award, the lowest price in each of 10 months, with award space on 71 departure dates. Monthly lows varied in economy (38,000 to 49,500 miles) and premium economy (55,000 to 120,000 miles), so the award on your dates may cost more. Search live before transferring points.
What's the lowest MileagePlus award from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)?
In economy, 38,000 miles + $5.60. Seen Oct 12, 2026, 23:16 UTC for a Nov 16, 2026 departure. United MileagePlus showed economy award space on 78 departure dates at any price (newest observation Oct 18, 2026, 22:04 UTC). In business class, 88,000 miles + $5.60 on a mixed-cabin itinerary (part of the trip in a lower cabin). Seen Oct 6, 2026, 19:23 UTC for a Nov 17, 2026 departure. United MileagePlus showed business-class award space on 71 departure dates at any price (newest observation Oct 18, 2026, 22:04 UTC). Search live before transferring points.
Can you book nonstop awards from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE) with MileagePlus?
AwardTool hasn't observed nonstop United MileagePlus award space on this route in the last 30 days. That doesn't mean nonstop space never appears.
Which credit card points can book MileagePlus awards from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)?
Bilt Rewards (1:1, Instant) and Chase Ultimate Rewards (1:1, Instant). Check current transfer bonuses; most transfers can't be reversed.
Which months had the lowest MileagePlus award prices from Washington Dulles (IAD) to Buenos Aires Ezeiza (EZE)?
Counting only month prices from programs with award space on 2 or more dates that month, and leaving out unusually low outliers, the lowest economy award AwardTool observed was for Nov 2026 departures: 38,000 miles (20 dates). The month table shows every lowest price, including those. Based on dates we observed, not a forecast.