I flew 2 European airlines across the Atlantic in economy. The seats were similar, but the food was night and day.

I flew for seven hours on Finnair's Airbus A350 between New York and Helsinki in mid-February in a standard coach seat on the outbound red-eye and in an extra-legroom seat on the return.

My six-hour British Airways Boeing 777 trek from New York to London in early March was a daytime flight, and I was randomly assigned an exit row seat. 

British Airways and American Airlines revamped Terminal 8 as part of a $400 million project in 2022 to better streamline their Oneworld connections. Other Oneworld members like Iberia and Qatar Airways also operate here.

This means economy passengers flying on British Airways out of JFK will have a slew of kiosks to check in and plenty of queue space, while Finnair's little nook isn't as efficient or spacious.

In both cases, I checked in online and got my boarding pass on the airline's mobile app to skip the check-in counter and head straight to security.

Premium passengers flying on British Airways will likely prefer its giant lounges and fancy exclusive check-in areas at Terminal 8 versus Finnair's much smaller operation.

After flying both airlines, I prefer Finnair for one main reason.

But it's not so deal-breaking that I would pay significantly more to fly it over British Airways in the future.

In the case of Finnair, I could move my assigned standard seat after check-in to the last row. I like it more for privacy and freedom to recline.

For the return, I wanted to try an awkward-looking extra legroom "economy comfort" seat, 22C, which I saw on the seat map and purposely booked for the return flight. It ended up working out, though, for review purposes. 

British Airways randomly assigned me an exit row seat for my outbound to London — which is not my preference. I tried to change it on the app but did not have any success, unfortunately.

Both airlines' extra-legroom seats offered endless legroom because neither had a seat in front.

The seat was in the second row of the economy section and had endless legroom thanks to the two-seater row that sat off the right in front of me.

I booked it simply to try something new, but I wouldn't do it again. The location made me feel like I was in the middle of all the chaos, with galley carts constantly hitting my chair.

The tray table was inside the armrest, and the TV was stored by that.

I rarely ever opt for extra legroom seats because I'm short, especially not in rows where I have to store the screen and my personal items for takeoff and landing. 

However, this is not a British Airways or Finnair issue. It's just how the exit and bulkhead seats are designed across the world, though some airlines mount TVs on the wall instead so passengers don't have to store them.

I was able to charge both my tablet and my iPhone at the same time, thanks to the pairs of USB ports on the screen. No having to eat through the juice on my portable charger.

I found the padding on both were superior to the likes of United and Air Canada, for example.

The seats were plush and not replaced with a slimmer seat with minimal cushioning.

The headrests on both seats were adjustable with folding wings. Both also came with linens, though British Airways also gave me a pillow instead of just a blanket.

The lesser legroom is not an issue for my short self, but taller passengers who need the bulkhead should just avoid the more cramped 26A and 26K exit row seats.

Another problem with sitting in an exit row or bulkhead is that there is typically no storage space. British Airways solves this for the window seats by attaching a little pocket on the fuselage, which could fit my tablet, headphones, and chargers. This was not the case for the middle and aisle seat passengers, though.

Meanwhile, Finnair's aisle seat didn't have any storage because it sat behind a row with only two seats. Luckily, the middle seat was open with access to its seatback and under-seat space. Otherwise, I'd have to keep things on my lap or in the overhead bin.

The seat was easily more padded than competing US carriers like United Airlines, and the recline paired with headrest and legroom helped me sleep easily.

I did like British Airways' overall seat design minus the specific exit row/bulkhead inconveniences, so I would imagine its standard seat would be a much better ride for me.

Finnair's seat would spark the classic "should you or should you not recline your airline seat" argument.

However, the flight attendants asked people to put their seats upright during the meal service.

If the person in front reclined and I didn't, then I would have trouble seeing my seatback screen because it didn't have the flip-up mechanism like other carriers.

I can imagine the inconvenience of being unable to freely recline when you want could be bothersome. I actually selected the last row so I could recline whenever I wanted, and recommend doing that to make it a little better.

The seats on both come with plenty of TV and movie options, a responsive touchscreen TV, great service from the flight attendants, and a solid tray table.

I liked that none of the tables were flimsy and could easily hold my tablet. 

I've flown in economy on Singapore Airlines, All Nippon Airways, and Korean Air, which set the bar for inflight meals. They're just in another league when it comes to taste and quality. 

Finnair's food, however, could put its name in the ring.

Both long-haul journeys on Finnair offered one free meal after takeoff and another drink service within the last two hours before landing.

This differs from other carriers, like United, that offer a breakfast or lunch/dinner as a second meal. 

The food was savory, and I was extremely impressed with the quality and texture after having abysmal food on Air Canada.

United's food isn't that great, either. 

I rarely find eggs that actually taste good on an airline, so I wasn't expecting much. The sausage was OK, as were the veggies. The packaged side dishes were the good parts, though, and kept me filled.

In my experience, I wouldn't be shocked if the food from its main London hub is better than the meals originating in NYC, where the airline likely has less hands-on control.

On my return, I was in business class, so I had a much better food experience and was glad British Airways' meals didn't disappoint in its Club Suite.

This severely limits the options passengers have to connect on Finnair in Helsinki and onward to a final destination.

British Airways passengers, by comparison, can take a red-eye or a daytime flight and land in London at various times of day to catch connecting flights within or beyond Europe.

The shorter flight to London may make British Airways' trek more desirable despite the mediocre food, as Helsinki is at least another hour longer.

The same goes for other carriers like Germany's Lufthansa or Dutch flag carrier KLM that fly to closer hubs, making the overall travel time lower compared to Finnair.

If I need to fly to a city in Europe that doesn't have a nonstop from New York — like Tallinn, Estonia, or Ljubliana, Slovenia, for example — then I'd first look at Finnair via Helsinki over options like British Airways.

This is simply because I know the journey will be comfortable with good food. However, the smaller operation limits the flight frequencies and connection times, meaning flying Finnair may not be the most efficient option timewise.

I'm going to Vilnius, Lithuania, in April and am flying on Scandinavian Airlines, or SAS, for the first time for that trip because it was the cheapest option.

Finnair and British Airways (and Lufthansa, which I have yet to try) were my other best options, with Finnair being more expensive.

Finnair may be personally more enjoyable, but it's not so incredible that I'd fork out another $200+ for a guaranteed good meal — I'd rather save the money and just bring my own food or suck it up with British Airways' mushy pastry.