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Cheap flights from Ottawa to Buenos Aires from C$ 533

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 1,076

One-way from

C$ 533

Popular in

December

Cheapest in

September

Average price

C$ 1,071
United Airlines
  • United Airlines
  • 26/10-10/11
  • 4 total stops
  • 49h 21m total
  • Ottawa to Buenos Aires
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Air Canada
  • Air Canada
  • 15/11
  • 2 total stops
  • 22h 20m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 48 potential savings vs. average RT price).
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Average for round-trip flights in September 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 15 September 2025.

Sun 26/106:00 a.m.YOW - EZE
2 stops25h 20mUnited Airlines
Mon 10/1111:55 p.m.EZE - YOW
2 stops24h 01mUnited Airlines
Deal found 13/9C$ 1,076
Fri 24/105:50 p.m.YOW - EZE
2 stops35h 30mUnited Airlines
Fri 31/1010:55 p.m.EZE - YOW
2 stops24h 01mUnited Airlines
Deal found 14/9C$ 1,090
Sun 26/108:05 p.m.YOW - EZE
2 stops18h 05mAir Canada
Mon 10/114:45 p.m.EZE - YOW
3 stops21h 37mAir Canada
Deal found 13/9C$ 1,108
Fri 24/1011:05 a.m.YOW - EZE
3 stops26h 25mAir Canada
Fri 31/104:45 p.m.EZE - YOW
2 stops17h 57mAir Canada
Deal found 14/9C$ 1,154
Sat 11/108:55 p.m.YOW - EZE
3 stops40h 35mAir Canada
Sat 18/104:35 p.m.EZE - YOW
2 stops18h 50mAir Canada
Deal found 13/9C$ 1,155
Wed 31/129:45 a.m.YOW - EZE
2 stops19h 35mUnited Airlines
Sat 28/210:05 p.m.EZE - YOW
2 stops22h 50mUnited Airlines
Deal found 12/9C$ 1,202
Wed 31/128:00 p.m.YOW - EZE
3 stops41h 10mAir Canada
Sat 28/24:45 p.m.EZE - YOW
2 stops21h 37mAir Canada
Deal found 13/9C$ 1,245
Sun 26/107:25 p.m.YOW - AEP
2 stops19h 04mMultiple Airlines
Mon 10/118:55 a.m.AEP - YOW
2 stops26h 47mMultiple Airlines
Deal found 13/9C$ 1,368
Fri 24/105:55 a.m.YOW - AEP
3 stops21h 45mMultiple Airlines
Fri 31/1010:55 a.m.AEP - YOW
3 stops38h 47mMultiple Airlines
Deal found 14/9C$ 1,495
Mon 13/109:55 p.m.YOW - AEP
3 stops33h 25mMultiple Airlines
Mon 20/1010:15 a.m.AEP - YOW
3 stops28h 36mMultiple Airlines
Deal found 15/9C$ 1,678
Sat 11/109:55 p.m.YOW - AEP
2 stops42h 25mMultiple Airlines
Sat 18/101:55 p.m.AEP - YOW
2 stops21h 30mMultiple Airlines
Deal found 13/9C$ 1,705

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 15 September 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

Sun 26/10

6:00 a.m.-8:20 a.m.

2 stops25h 20m

Buenos Aires Ministro Pistarini

Mon 10/11

11:55 p.m.-9:56 p.m.

2 stops24h 01m

C$ 1,076

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 9/2

8:00 p.m.-3:10 p.m.

3 stops41h 10m

Buenos Aires Ministro Pistarini

Wed 25/2

4:45 p.m.-9:42 a.m.

2 stops18h 57m

C$ 1,105

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 31/12

9:45 a.m.-7:20 a.m.

2 stops19h 35m

Buenos Aires Ministro Pistarini

Sat 28/2

10:05 p.m.-6:55 p.m.

2 stops22h 50m

C$ 1,203

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 8/2

10:30 a.m.-9:20 a.m.

2 stops20h 50m

Buenos Aires Ministro Pistarini

Tue 24/2

10:05 p.m.-2:30 p.m.

2 stops18h 25m

C$ 1,242

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 31/12

8:00 p.m.-3:10 p.m.

3 stops41h 10m

Buenos Aires Ministro Pistarini

Sat 28/2

4:45 p.m.-12:22 p.m.

2 stops21h 37m

C$ 1,245

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Sun 26/10

7:25 p.m.-3:29 p.m.

2 stops19h 04m

Buenos Aires Jorge Newbery

Mon 10/11

8:55 a.m.-9:42 a.m.

2 stops26h 47m

C$ 1,368

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 9/3

8:25 p.m.-3:50 p.m.

2 stops18h 25m

Buenos Aires Ministro Pistarini

Mon 30/3

4:35 p.m.-12:16 p.m.

3 stops20h 41m

C$ 1,445

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Mon 9/2

8:25 p.m.-12:20 a.m.

2 stops25h 55m

Buenos Aires Jorge Newbery

Wed 25/2

4:40 p.m.-11:18 a.m.

2 stops20h 38m

C$ 1,506

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 13/10

9:55 p.m.-2:30 p.m.

2 stops39h 35m

Buenos Aires Ministro Pistarini

Mon 20/10

4:35 p.m.-10:25 a.m.

2 stops18h 50m

C$ 1,524

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sat 11/10

8:55 p.m.-2:30 p.m.

3 stops40h 35m

Buenos Aires Ministro Pistarini

Fri 17/10

1:40 a.m.-10:04 p.m.

2 stops21h 24m

C$ 1,528

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 21 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

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$ 810). 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 15 September 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 15 September 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
8,929 reviews
Check prices

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews
Check prices

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
8,929 reviews
Check prices

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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 and Air Canada fly from Ottawa to Buenos Aires in about 25h 20m. The time it takes to get you to your destination can typically vary by up to 15h 50m. The distance from Ottawa to Buenos Aires is about 9070 km. This flight may include one or multiple stops.

  • 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$ 1,099. 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$ 810). 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

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Alternative routes for Ottawa to Buenos Aires

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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,099AverageC$ 1,306FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,111AverageC$ 1,600FlexibilityNo 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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