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Fish & Seafood

How long does smoked salmon (lox) last?

Cured cold-smoked salmon.

Quick answer
Fridge (40°F / 4°C)
2 weeks
Unopened
Freezer (0°F / -18°C)
2 months
2 months frozen
After opening
1 week
5-7 days after opening
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Smoked Salmon (Lox) shelf life chart

All times are best-quality guidelines based on USDA FoodKeeper and FDA storage data. Actual shelf life depends on temperature stability, packaging, and how the food was handled.

StorageTime
Refrigerator (40°F / 4°C)2 weeks
After opening1 week
Freezer (0°F / -18°C)2 months

Can you freeze smoked salmon (lox)?

Yes — smoked salmon (lox) freezes well for up to 2 months at 0°F (-18°C). 2 months frozen

Tips for freezing:

  • Use airtight, freezer-safe containers or bags — squeeze out as much air as possible to prevent freezer burn.
  • Label and date everything. Frozen food all looks the same after a few weeks.
  • Freeze in portion sizes you'll actually use — refreezing thawed food is generally not recommended.
  • Thaw in the fridge overnight, never on the counter — bacterial growth restarts above 40°F.

What to do if…

What if my smoked salmon (lox) sat out overnight?
Generally not safe. Bacterial growth doubles every 20 minutes between 40°F and 140°F (the "danger zone"). The USDA rule: discard any perishable food left at room temperature for more than 2 hours (or 1 hour above 90°F). When in doubt, throw it out — food poisoning isn't worth the gamble.
What if my smoked salmon (lox) is past the printed date?
"Best by," "sell by," and "use by" dates are quality indicators, not safety deadlines. Smoked Salmon (Lox) is often still safe past the printed date if stored properly and showing none of the spoilage signs above. Use your senses — sight, smell, texture — and the storage times listed in this guide.
What if it smells weird but looks fine?
Trust your nose. Smell is one of the most reliable indicators of spoilage — your nose evolved specifically to detect dangerous food. If smoked salmon (lox) has any sour, ammonia-like, sulfur, or "off" smell beyond its normal aroma, discard it. Visible mold or texture changes confirm the warning.
Is smoked salmon (lox) still safe after the recommended freezer time?
Frozen foods stay technically safe indefinitely at 0°F (-18°F) — bacteria can't multiply at freezing temperatures. The recommended 2 months is for **best quality**: after that, you'll notice freezer burn, texture changes, and flavor loss, but the food is still safe to eat if continuously frozen.

Can expired smoked salmon (lox) make you sick?

Yes — but the printed date isn't the trigger. Foodborne illness comes from bacterial growth (Salmonella, E. coli, Listeria, Staphylococcus) or fungal toxins, which depend on storage temperature and time, not the calendar date on the package.

Symptoms of food poisoning typically appear within 6–48 hours and include nausea, vomiting, diarrhea, stomach cramps, and fever. Severe cases — especially in young children, elderly, pregnant, or immunocompromised people — warrant medical attention. The safest practice: when in doubt, throw it out.

Frequently asked questions

How long does smoked salmon (lox) last in the fridge?
2 weeks at 40°F (4°C). Unopened
How long does smoked salmon (lox) last after opening?
1 week after opening. 5-7 days after opening
How can I tell if smoked salmon (lox) has gone bad?
Look for: Slimy surface; Grey or brown color; Sour smell.
Can I eat smoked salmon (lox) past the "best by" date?
"Best by" is a quality date, not a safety date. As long as smoked salmon (lox) has been stored properly and shows no spoilage signs, it's usually safe to eat — but quality may have declined. Use your senses to judge.

Related shelf-life guides

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How long does raw salmon last?
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How long does shrimp (raw) last?
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How long does canned tuna (opened) last?
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How long does cooked salmon last?
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How long does fresh tuna last?
🐟
How long does frozen fish last?

Signs smoked salmon (lox) has gone bad

  • •Slimy surface
  • •Grey or brown color
  • •Sour smell

Storage tips

  • ✓Keep tightly wrapped after opening
  • ✓Bottom shelf, coldest spot
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More fish & seafood

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Raw Salmon
2 days fridge
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Shrimp (raw)
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Canned Tuna (opened)
3 days fridge
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Cooked Salmon
4 days fridge
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Fresh Tuna
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Frozen Fish
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Sources & review
Compiled by the BestByDates editorial team. Last reviewed: January 2025. Spotted an error? Let us know.

Disclaimer: Times shown are USDA/FDA-recommended best quality periods, not absolute safety guarantees. Storage conditions, packaging, and food handling all affect actual shelf life. When in doubt, throw it out.