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Cheap flights from Ottawa to Buenos Aires from C$ 544

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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
27 ago. — 3 sep.1
1 adult

Cheapflights Tip: The best prices from Ottawa to Buenos Aires are usually found in September or October, booked 75 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Ottawa to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Buenos Aires (BUE). 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 22 agosto 2025.

Round-trip from

C$ 1,115

One-way from

C$ 544

Popular in

December

Cheapest in

September

Average price

C$ 1,425
United Airlines
  • United Airlines
  • 17/9-21/9
  • 4 total stops
  • 78h 13m total
  • Ottawa to Buenos Aires
Search Deals
United Airlines
  • United Airlines
  • 23/1
  • 2 total stops
  • 19h 12m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Ottawa to Buenos Aires

Cheapest flights from Ottawa to Buenos Aires
Explore the most affordable flight options available from Ottawa to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 agosto 2025.

mié. 17/92:45 p.m.YOW - EZE
2 stops40h 15mUnited Airlines
mar. 23/99:00 p.m.EZE - YOW
2 stops37h 58mUnited Airlines
Deal found 20/8C$ 1,115
dom. 14/97:29 p.m.YOW - EZE
2 stops35h 31mUnited Airlines
lun. 22/99:00 p.m.EZE - YOW
2 stops18h 13mUnited Airlines
Deal found 20/8C$ 1,117
mié. 27/86:05 a.m.YOW - EZE
2 stops24h 55mUnited Airlines
mié. 3/99:00 p.m.EZE - YOW
2 stops37h 58mUnited Airlines
Deal found 20/8C$ 1,118
lun. 8/97:29 p.m.YOW - EZE
2 stops35h 31mUnited Airlines
vie. 19/99:00 p.m.EZE - YOW
2 stops37h 58mUnited Airlines
Deal found 19/8C$ 1,119
mié. 20/87:29 p.m.YOW - EZE
2 stops35h 31mUnited Airlines
mar. 26/89:00 p.m.EZE - YOW
2 stops42h 13mUnited Airlines
Deal found 19/8C$ 1,121
dom. 14/98:55 p.m.YOW - EZE
2 stops16h 35mAir Canada
sáb. 27/94:35 p.m.EZE - YOW
2 stops22h 18mAir Canada
Deal found 21/8C$ 1,131
dom. 21/96:40 p.m.YOW - EZE
2 stops18h 50mAir Canada
mié. 24/94:35 p.m.EZE - YOW
2 stops18h 50mAir Canada
Deal found 20/8C$ 1,133
dom. 14/97:29 p.m.YOW - EZE
2 stops35h 31mUnited Airlines
vie. 19/99:00 p.m.EZE - YOW
2 stops37h 58mUnited Airlines
Deal found 20/8C$ 1,135
mié. 10/94:05 p.m.YOW - EZE
2 stops21h 25mAir Canada
lun. 15/94:35 p.m.EZE - YOW
3 stops28h 42mAir Canada
Deal found 19/8C$ 1,138
lun. 15/95:55 a.m.YOW - EZE
2 stops26h 50mDelta
mar. 23/98:10 p.m.EZE - YOW
2 stops29h 12mDelta
Deal found 20/8C$ 1,140
lun. 15/99:55 p.m.YOW - EZE
2 stops39h 35mAir Canada
sáb. 20/94:35 p.m.EZE - YOW
2 stops17h 25mAir Canada
Deal found 20/8C$ 1,142
sáb. 13/97:50 p.m.YOW - EZE
3 stops41h 40mAir Canada
jue. 18/94:35 p.m.EZE - YOW
2 stops17h 25mAir Canada
Deal found 20/8C$ 1,143

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Buenos Aires 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 629,999 searches. Data last updated 22 agosto 2025.
Use the filters below to find and compare flights from Ottawa to Buenos Aires that are best for you.

Fly from

Ottawa

Fly to

Buenos Aires

Route

Depart

Return

Price

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

mié. 17/9

2:45 p.m.-8:00 a.m.

2 stops40h 15m

Buenos Aires Ministro Pistarini

mar. 23/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,115

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

mié. 17/9

2:45 p.m.-8:00 a.m.

2 stops40h 15m

Buenos Aires Ministro Pistarini

dom. 21/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,115

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

dom. 14/9

7:29 p.m.-8:00 a.m.

2 stops35h 31m

Buenos Aires Ministro Pistarini

lun. 22/9

9:00 p.m.-2:13 p.m.

2 stops18h 13m

C$ 1,117

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

mar. 16/9

2:45 p.m.-8:00 a.m.

2 stops40h 15m

Buenos Aires Ministro Pistarini

dom. 21/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,117

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

dom. 14/9

7:29 p.m.-8:00 a.m.

2 stops35h 31m

Buenos Aires Ministro Pistarini

dom. 21/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,117

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

mar. 16/9

7:29 p.m.-8:00 a.m.

2 stops35h 31m

Buenos Aires Ministro Pistarini

mar. 23/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,117

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

dom. 14/9

7:29 p.m.-8:00 a.m.

2 stops35h 31m

Buenos Aires Ministro Pistarini

mar. 23/9

9:00 p.m.-2:13 p.m.

2 stops18h 13m

C$ 1,117

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

lun. 17/11

9:45 a.m.-9:20 a.m.

2 stops21h 35m

Buenos Aires Ministro Pistarini

sáb. 22/11

11:55 p.m.-11:54 p.m.

2 stops25h 59m

C$ 1,118

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

lun. 8/9

12:30 p.m.-8:00 a.m.

2 stops18h 30m

Buenos Aires Ministro Pistarini

jue. 18/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,119

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

lun. 8/9

7:29 p.m.-8:00 a.m.

2 stops35h 31m

Buenos Aires Ministro Pistarini

mar. 16/9

9:00 p.m.-9:58 a.m.

2 stops37h 58m

C$ 1,119

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

Showing 1-10 of 37 results
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Best time to book a flight from Ottawa to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to Buenos Aires

How far ahead should I book a flight from Ottawa to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Buenos Aires. Price data was last updated on 8 August 2025.

The best time to book flights from Ottawa to Buenos Aires is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ottawa to Buenos Aires?

Currently, September is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 812). Flying from Ottawa to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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.

What is the cheapest time of day to fly from YOW to BUE?

Find hourly flight availability from Ottawa to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 agosto 2025.

One of the essential ways to save on airfare from Ottawa to Buenos Aires is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

How much does it cost to fly round-trip from Ottawa to Buenos Aires?

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated 22 agosto 2025.
Read reviews from past customers who have flown United Airlines and Air Canada from Ottawa to Buenos Aires. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,930 reviews
Check prices

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
United Airlines
7.4
Good
8,930 reviews
United Airlines
7.4
Good
8,930 reviews
Check prices

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,930 reviews
Check prices

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

Related info for your journey

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

  • What airport do you fly from for flights from Ottawa to Buenos Aires?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to Buenos Aires. On average, Ottawa has 0 outbound flights to Buenos Aires per day from 2 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Ottawa to Buenos Aires?

    Airlines like United Airlines fly from Ottawa to Buenos Aires in about 40h 15m. The time it takes to get you to your destination can typically vary by up to . The distance from Ottawa to Buenos Aires is about 9070 km.

  • What are the cheapest airlines flying from Ottawa to Buenos Aires round-trip?

    Cheapflights users have booked flights from Ottawa to Buenos Aires round-trip from C$ 1,105. Another airline that can offer you cheap pricing is United Airlines. Air Canada is currently priced 20% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ottawa to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Ottawa to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Buenos Aires.

  • Can I find deals for business class flights from Ottawa to Buenos Aires?

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

  • What is the cheapest month to book a flight from Ottawa to Buenos Aires?

    Currently, September is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 812). Flying from Ottawa to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ottawa to Buenos Aires

Discover the top 2 airlines that operate flights from Ottawa to Buenos Aires. 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 629,999 searches. Data last updated 22 agosto 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,105AverageC$ 1,313FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,117AverageC$ 1,609FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to Buenos Aires?

Cheapflights helps you search for flights from Ottawa to Buenos Aires via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Buenos Aires?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Buenos Aires for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to Buenos Aires with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to Buenos Aires with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Buenos Aires become cheaper?

Not ready to book yet? You can track prices for flights from Ottawa to Buenos Aires on Cheapflights with our Price Alert feature and get notified when better prices are available.

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