Happy Hour

Flex Mussels Upper East Side

Name: Flex Mussels Upper East Side
Address: 1431 3rd Avenue, New York, NY, 10028, US
Telephone: 212-717-7772

Upper East Side · Seafood / Canadian

GOOGLE★ 4.51,364 YELP★ 4.11,283Google: higher than 31% of venues in New York City

The happy hour

Drinks

Select cocktails — discounted during happy hour
Wines by the glass — discounted during happy hour

Food

Oysters — $1.50–$2 each
2 pots mussels + 2 orders fries — $25 (Mon–Fri 5:30–7 PM, Sat–Sun 5–7 PM)

Bar and counter seating only for happy hour. Also late-night happy hour Sun–Thu 9–10 PM; Fri–Sat 9–10:30 PM.

Deal last verified June 2026 (QA). Confirmed on the venue’s own website.

The space

Photos: Google Maps

The vibe

Direct importer of PEI mussels and fresh oysters, served in a lively upscale setting. The mussel-and-frites happy hour deal is a cult favorite on the UES. Bar and counter seating only for happy hour. Also late-night happy hour Sun–Thu 9–10 PM; Fri–Sat 9–10:30 PM.

Cozy
Romantic
Hip
Good for groups
Known for cocktails
Takes reservations
Outdoor seating

Is that score good?

Almost everywhere scores 4–5 stars, so each site's score is shown against every venue in the Atlas rated on that site — here in New York City, and across the US. The gold bar is this spot.

GOOGLE ★ 4.5 1,364 ratings ↗

In New York City 222 rated venues At the median

3.7 4.0 THIS SPOT 4.5 4.9

Rated higher than 31% · tied with 22% · lower than 47% of the others · median ★ 4.5

Across the US 2,042 rated venues At the median

3.1 3.5 4.0 THIS SPOT 4.5 5.0

Rated higher than 34% · tied with 23% · lower than 44% of the others · median ★ 4.5

YELP ★ 4.1 1,283 reviews ↗

In New York City 219 rated venues Below median

3.0 3.5 THIS SPOT 4.1 4.5 5.0

Rated higher than 41% · tied with 8% · lower than 51% of the others · median ★ 4.2

Across the US 1,993 rated venues At the median

2.0 3.0 3.5 THIS SPOT 4.1 4.5 5.0

Rated higher than 37% · tied with 13% · lower than 49% of the others · median ★ 4.1

Each bar counts venues at that rating (0.1-star steps), lowest on the left; the curve starts at the lowest score anyone has. Ratings captured October 7, 2026.

Getting there

1431 3rd Avenue, New York, NY 10028 · 212-717-7772

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